All Stories

  1. Nonaqueous capillary electrophoresis of graphene suggesting charging and dispersion mechanism in certain organic solvents

    Article • Analytica Chimica Acta, October 2025, Elsevier

    Professor Tetsuo Okada

  2. Essential Role of Methyl Groups in Ice Recrystallization Inhibition of Antifreeze Silver Nanoparticles Studied by Surface-Enhanced Raman Scattering

    Article • The Journal of Physical Chemistry C, May 2024, American Chemical Society (ACS)

    Professor Tetsuo Okada

  3. Ice zone melting method for probing ion-specific partitioning at frozen interface

    Article • Colloids and Surfaces A Physicochemical and Engineering Aspects, May 2024, Elsevier

    Professor Tetsuo Okada

  4. Adsorption/Desorption Characteristics of Metal Ions on Ferric Oxyhydroxide During a Freeze–Thaw Cycle

    Article • ACS Earth and Space Chemistry, January 2024, American Chemical Society (ACS)

    Professor Tetsuo Okada

  5. Thin Layer Chromatography‐Freeze Surface‐Enhanced Raman Spectroscopy: A Powerful Tool for Monitoring Synthetic Reactions

    Article • Chemistry - A European Journal, May 2023, Wiley

    Professor Tetsuo Okada

  6. Biosensing Strategies Based on Particle Behavior

    Article • Chemosensors, March 2023, MDPI AG

    Professor Tetsuo Okada

  7. Freeze Surface-Enhanced Raman Scattering Coupled with Thin-Layer Chromatography: Pesticide Detection and Quantification Case

    Article • Analytical Chemistry, September 2022, American Chemical Society (ACS)

    Professor Tetsuo Okada

  8. Aqueous-nonaqueous solvent-switching ion chromatography of halide impurities in ionic liquids

    Article • Analytica Chimica Acta, May 2022, Elsevier

    Professor Tetsuo Okada

  9. pH-Buffering Capacity of Ice

    Article • The Journal of Physical Chemistry C, April 2022, American Chemical Society (ACS)

    Professor Tetsuo Okada

  10. In Situ X-ray Fluorescence Evaluation of Metal Ion Adsorption on Ferric Oxyhydroxide in Frozen Solutions

    Article • ACS Earth and Space Chemistry, January 2022, American Chemical Society (ACS)

    Professor Tetsuo Okada

  11. Surface-enhanced Raman scattering of DNA bases using frozen silver nanoparticle dispersion as a platform

    Article • Microchimica Acta, November 2021, Springer Science + Business Media

    Professor Tetsuo Okada

  12. Quantification using statistical parameters derived from signal intensity distributions in surface enhanced Raman scattering (SERS)

    Article • Analytica Chimica Acta, October 2021, Elsevier

    Professor Tetsuo Okada

  13. Hydration of bromide at reverse micelle interfaces studied by X-ray absorption fine structure

    Article • Journal of Colloid and Interface Science, October 2021, Elsevier

    Professor Tetsuo Okada

  14. Directional Supramolecular Polymerization in a Dynamic Microsolution: A Linearly Moving Polymer’s End Striking Monomers

    Article • Journal of the American Chemical Society, June 2021, American Chemical Society (ACS)

    Professor Tetsuo Okada

  15. Freezing Enhances Leaching of Ferrous Ions but Hinders Reductive Dissolution of Ferric Ions from Iron Oxides

    Article • ACS Earth and Space Chemistry, May 2021, American Chemical Society (ACS)

    Professor Tetsuo Okada

  16. Freeze Control of Nanoparticle Aggregation and Exploration as Surface Enhanced Raman Scattering (SERS) Platform

    Article • ChemNanoMat, February 2021, Wiley

    Professor Tetsuo Okada

  17. Microscale pH inhomogeneity in frozen NaCl solutions

    Article • Physical Chemistry Chemical Physics, January 2021, Royal Society of Chemistry

    Professor Tetsuo Okada

  18. Structures of ions accommodated in salty ice Ih crystals

    Article • Physical Chemistry Chemical Physics, January 2021, Royal Society of Chemistry

    Professor Tetsuo Okada

  19. Hydrostatic‐Pressure‐Controlled Molecular Recognition: A Steroid Sensing Case Using Modified Cyclodextrin

    Article • ChemPhotoChem, October 2020, Wiley

    Professor Tetsuo Okada

  20. Reverse micelle chromatography for evaluation of partition of organic solutes to micellar pseudophases

    Article • Journal of Colloid and Interface Science, October 2020, Elsevier

    Professor Tetsuo Okada

  21. Multiphase Behavior of Tetraphenylethylene Derivatives with Different Polarities at High Pressures

    Article • The Journal of Physical Chemistry, July 2020, American Chemical Society (ACS)

    Professor Tetsuo Okada

  22. Interaction between antifreeze protein and ice crystal facet evaluated by ice-channel electrophoretic measurements of threshold electric field strength

    Article • Analytica Chimica Acta, May 2020, Elsevier

    Professor Tetsuo Okada

  23. Ice Confinement-Induced Solubilization and Aggregation of Cyanonaphthol Revealed by Fluorescence Spectroscopy and Lifetime Measurements

    Article • The Journal of Physical Chemistry, April 2020, American Chemical Society (ACS)

    Professor Tetsuo Okada

  24. Space Size-Dependent Transformation of Tetraphenylethylene Carboxylate Aggregates by Ice Confinement

    Article • The Journal of Physical Chemistry, February 2020, American Chemical Society (ACS)

    Professor Tetsuo Okada

  25. Frozen Solution-Mediated Asymmetric Synthesis: Control of Enantiomeric Excess

    Article • The Journal of Organic Chemistry, February 2020, American Chemical Society (ACS)

    Professor Tetsuo Okada

  26. Aptamer-Based Sensing of Small Organic Molecules by Measuring Levitation Coordinate of Single Microsphere in Combined Acoustic–Gravitational Field

    Article • ACS Omega, February 2020, American Chemical Society (ACS)

    Professor Tetsuo Okada

  27. Hydrostatic Pressure-Induced Spectral Variation of Reichardt’s Dye: A Polarity/Pressure Dual Indicator

    Article • ACS Omega, December 2019, American Chemical Society (ACS)

    Professor Tetsuo Okada

  28. Quasichemical Approach to pH Shifts in Frozen Phosphate Buffers

    Article • Industrial & Engineering Chemistry Research, September 2019, American Chemical Society (ACS)

    Professor Tetsuo Okada

  29. Size-Tunable Micro-/Nanofluidic Channels Fabricated by Freezing Aqueous Sucrose

    Article • ACS Omega, August 2019, American Chemical Society (ACS)

    Professor Tetsuo Okada

  30. Facilitated Dehydration of Rb + Ions in Cation‐Exchange Resin when Surrounded by Cs + Ions: A Marked Phenomenon in Superheated Water

    Article • ChemistrySelect, April 2019, Wiley

    Professor Tetsuo Okada

  31. Charging of the Ice/Solution Interface by Deprotonation of Dangling Bonds, Ion Adsorption, and Ion Uptake in an Ice Crystal As Revealed by Zeta Potential Determination

    Article • The Journal of Physical Chemistry C, February 2019, American Chemical Society (ACS)

    Professor Tetsuo Okada

  32. Zeta potential determination with a microchannel fabricated in solidified solvents

    Article • Journal of Colloid and Interface Science, December 2018, Elsevier

    Professor Tetsuo Okada

  33. Multiple MicroRNA Quantification Based on Acoustic Levitation of Single Microspheres after One-Pot Sandwich Interparticle Hybridizations

    Article • Analytical Chemistry, October 2018, American Chemical Society (ACS)

    Professor Tetsuo Okada

  34. Growth and Morphology of Liquid Phase in Frozen Aqueous NaCl Probed by Voltammetry and Simulations

    Article • ChemPhysChem, October 2018, Wiley

    Professor Tetsuo Okada

  35. Zeptomole Biosensing of DNA with Flexible Selectivity Based on Acoustic Levitation of a Single Microsphere Binding Gold Nanoparticles by Hybridization

    Article • ACS Sensors, August 2018, American Chemical Society (ACS)

    Professor Tetsuo Okada

  36. Liquid–Liquid Extraction from Frozen Aqueous Phases Enhances Efficiency with Reduced Volumes of Organic Solvent

    Article • ACS Sustainable Chemistry & Engineering, June 2018, American Chemical Society (ACS)

    Professor Tetsuo Okada

  37. Electrophoresis in ice surface grooves for probing protein affinity to a specific plane of ice crystal

    Article • Talanta, June 2018, Elsevier

    Professor Tetsuo Okada

  38. Zeptomole Detection Scheme Based on Levitation Coordinate Measurements of a Single Microparticle in a Coupled Acoustic-Gravitational Field

    Article • Analytical Chemistry, January 2018, American Chemical Society (ACS)

    Professor Tetsuo Okada

  39. Hydrodynamic Chromatography

    Article • January 2018, Elsevier

    Professor Tetsuo Okada

  40. Enhanced chiral recognition by β-cyclodextrin at liquid/liquid interfaces as revealed by chromatographic and interfacial tension measurements

    Article • Journal of Colloid and Interface Science, December 2017, Elsevier

    Professor Tetsuo Okada

  41. Viscosity of Freeze-Concentrated Solution Confined in Micro/Nanospace Surrounded by Ice

    Article • The Journal of Physical Chemistry C, May 2017, American Chemical Society (ACS)

    Professor Tetsuo Okada

  42. Acoustic Sensing Based on Density Shift of Microspheres by Surface Binding of Gold Nanoparticles

    Article • Analytical Sciences, January 2017, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  43. Inside Back Cover: Voltammetry of Viologens Revealing Reduction of Hydrophobic Interaction in Frozen Aqueous Electrolyte Solutions (ChemElectroChem 1/2017)

    Article • ChemElectroChem, December 2016, Wiley

    Professor Tetsuo Okada

  44. Voltammetry of Viologens Revealing Reduction of Hydrophobic Interaction in Frozen Aqueous Electrolyte Solutions

    Article • ChemElectroChem, October 2016, Wiley

    Professor Tetsuo Okada

  45. Micro- and Nano-Liquid Phases Coexistent with Ice as Separation and Reaction Media.

    Article • The Chemical Record, October 2016, Wiley

    Professor Tetsuo Okada

  46. X-ray Fluorescence Imaging of Frozen Aqueous NaCl Solutions

    Article • Langmuir, January 2016, American Chemical Society (ACS)

    Professor Tetsuo Okada

  47. Chiral resolution with frozen aqueous amino acids

    Article • Analytical Methods, January 2016, Royal Society of Chemistry

    Professor Tetsuo Okada

  48. Shear-Driven Flow Ice Chromatography as a Possible Tool Probing Ice/Water Interface

    Article • Analytical Sciences, January 2016, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  49. Fluidic Grooves on Doped-Ice Surface as Size-Tunable Channels

    Article • Scientific Reports, November 2015, Springer Science + Business Media

    Professor Tetsuo Okada

  50. Freeze Enrichment Protocol Based on Voltammetric Probing of Liquid-Phase Growth in Frozen Aqueous Electrolyte Solutions

    Article • Analytical Chemistry, April 2015, American Chemical Society (ACS)

    Professor Tetsuo Okada

  51. Imbalance between Anion and Cation Distribution at Ice Interface with Liquid Phase in Frozen Electrolyte As Evaluated by Fluorometric Measurements of pH

    Article • The Journal of Physical Chemistry C, July 2014, American Chemical Society (ACS)

    Professor Tetsuo Okada

  52. Versatile chiral chromatography with mixed stationary phases of water-impregnated silica gel and reversed-phase packing

    Article • The Analyst, January 2014, Royal Society of Chemistry

    Professor Tetsuo Okada

  53. Design of Analytical Systems Based on Functionality of Doped Ice

    Article • Analytical Sciences, January 2014, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  54. Single Micro-channel Formation in a Gap between Probe Electrodes by Freezing an Aqueous Electrolyte

    Article • Analytical Sciences, January 2014, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  55. イオン交換機構の解明とそれを基盤とする新規計測法の展開

    Article • Journal of Ion Exchange, January 2014, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  56. Behavior of Polyhydric Alcohols at Ice/Liquid Interface

    Article • The Journal of Physical Chemistry C, November 2013, American Chemical Society (ACS)

    Professor Tetsuo Okada

  57. Enhanced Kinetics of Pseudo First-Order Hydrolysis in Liquid Phase Coexistent with Ice

    Article • The Journal of Physical Chemistry A, October 2013, American Chemical Society (ACS)

    Professor Tetsuo Okada

  58. Number Density of Liquid Inclusions Formed in Frozen Aqueous Electrolyte

    Article • ChemPhysChem, August 2013, Wiley

    Professor Tetsuo Okada

  59. Freeze sample enrichment highly adaptable to capillary electrophoresis

    Article • Analytical Methods, January 2013, Royal Society of Chemistry

    Professor Tetsuo Okada

  60. Comment on “Development of a Measurement Technique for Ion Distribution in an Extended Nanochannel by Super-Resolution-Laser-Induced Fluorescence”

    Article • Analytical Chemistry, December 2012, American Chemical Society (ACS)

    Professor Tetsuo Okada

  61. Two-Dimensional Particle Separation in Coupled Acoustic-Gravity-Flow Field Vertically by Composition and Laterally by Size

    Article • Analytical Chemistry, December 2012, American Chemical Society (ACS)

    Professor Tetsuo Okada

  62. Formation and Growth of Tetrahydrofuran Hydrate at the Ice/Hexane Interface

    Article • The Journal of Physical Chemistry C, June 2012, American Chemical Society (ACS)

    Professor Tetsuo Okada

  63. Up to 4 Orders of Magnitude Enhancement of Crown Ether Complexation in an Aqueous Phase Coexistent with Ice

    Article • Journal of the American Chemical Society, April 2012, American Chemical Society (ACS)

    Professor Tetsuo Okada

  64. Molecular Rearrangement in a Zinc Stearate Langmuir Film Dependent on a Film Preparation Method Studied Using Polarization-Modulation Infrared Reflection Absorption Spectroscopy and X-ray Absorption Fine Structure

    Article • The Journal of Physical Chemistry, March 2012, American Chemical Society (ACS)

    Professor Tetsuo Okada

  65. Wide-Bore Capillary Hydrodynamic Chromatography with ICP-MS Detection for Evaluation of Lanthanide Uptake by Molecular Aggregates

    Article • Analytical Sciences, January 2012, Japan Society for Analytical Chemistry

    Professor Akitoshi Okino, Professor Tetsuo Okada

  66. X-Ray absorption fine structure spectroscopy studies of thermal effects on ion-exchange equilibria

    Article • RSC Advances, January 2012, Royal Society of Chemistry

    Professor Tetsuo Okada

  67. Hydration of ions and salt crystallization in liquid phase coexistent with ice at temperature below eutectic point

    Article • RSC Advances, January 2012, Royal Society of Chemistry

    Professor Tetsuo Okada

  68. Control of Ice Chromatographic Retention Mechanism by Changing Temperature and Dopant Concentration

    Article • Analytical Chemistry, December 2011, American Chemical Society (ACS)

    Professor Tetsuo Okada

  69. Electrolyte-Doped Ice as a Platform for Atto- to Femtoliter Reactor Enabling Zeptomol Detection

    Article • Analytical Chemistry, May 2011, American Chemical Society (ACS)

    Professor Tetsuo Okada

  70. Anisotropic light absorption by localized surface plasmon resonance in a thin film of gold nanoparticles studied by visible multiple-angle incidence resolution spectrometry

    Article • Physical Chemistry Chemical Physics, January 2011, Royal Society of Chemistry

    Professor Tetsuo Okada

  71. Chiral Ice Chromatography

    Article • Journal of the American Chemical Society, September 2010, American Chemical Society (ACS)

    Professor Tetsuo Okada

  72. Eutectic Transition of Local Structure for Bromide Ion in Bulk and on Surface of Doped Ice

    Article • The Journal of Physical Chemistry C, July 2010, American Chemical Society (ACS)

    Professor Tetsuo Okada

  73. HYDRODYNAMIC CHROMATOGRAPHY IN NARROW AND WIDE-BORES; WHETHER RADIAL DIFFUSION IS ESSENTIAL OR NOT

    Article • Journal of Liquid Chromatography &amp Related Technologies, July 2010, Taylor & Francis

    Professor Tetsuo Okada

  74. Coupled Acoustic-Gravity Field for Dynamic Evaluation of Ion Exchange with a Single Resin Bead

    Article • Analytical Chemistry, June 2010, American Chemical Society (ACS)

    Professor Tetsuo Okada

  75. Temperature-Induced Molecular Structural Changes of Linear Poly(ethylene imine) in Water Studied by Mid-Infrared and Near-Infrared Spectroscopies

    Article • The Journal of Physical Chemistry, October 2009, American Chemical Society (ACS)

    Professor Tetsuo Okada

  76. Ice chromatography: current progress and future developments

    Article • Analytical and Bioanalytical Chemistry, August 2009, Springer Science + Business Media

    Professor Tetsuo Okada

  77. Evacuation of Counteranions from Langmuir Monolayers of Double-Tailed Quaternary Ammonium Ions into Subphase at High Surface Pressures as Studied by Total Reflection X-ray Absorption Spectrometry

    Article • The Journal of Physical Chemistry C, July 2009, American Chemical Society (ACS)

    Professor Tetsuo Okada

  78. Wide-bore hydrodynamic chromatography in sub-second range

    Article • Journal of Separation Science, February 2009, Wiley

    Professor Tetsuo Okada

  79. Facilitation of Applicability in Ice Chromatography by Mechanistic Considerations and by Preparation of Fine Water-Ice Stationary Phase

    Article • Analytical Chemistry, February 2009, American Chemical Society (ACS)

    Professor Tetsuo Okada

  80. Water-ice chip with liquid-core waveguide functionality. Toward lab on ice

    Article • Lab on a Chip, January 2009, Royal Society of Chemistry

    Professor Tetsuo Okada

  81. Adsorption-Partition Switching of Retention Mechanism in Ice Chromatography with NaCl-doped Water-Ice

    Article • Analytical Sciences, January 2009, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  82. Hydration of Ions in Confined Spaces and Ion Recognition Selectivity

    Article • Analytical Sciences, January 2009, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  83. Electrophoretic Levitation and Focusing of Particles by Field Switching

    Article • Analytical Sciences, January 2009, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  84. Development of Novel Analytical Methodologies that can Contribute to Understanding and Elucidation of Ion-exchange Phenomena

    Article • Journal of Ion Exchange, January 2009, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  85. Anisotropic Molecular Structure in Dip-Coated Films of Linear Poly(ethylene imine) Studied by Infrared Multiple-Angle Incidence Resolution Spectrometry

    Article • The Journal of Physical Chemistry, October 2008, American Chemical Society (ACS)

    Professor Tetsuo Okada

  86. Perturbation of Second and Farther Hydration Shells of Alkali Cations and Bromide in Concentrated Aqueous Protein as a Water-Shortage Medium

    Article • The Journal of Physical Chemistry, September 2008, American Chemical Society (ACS)

    Professor Tetsuo Okada

  87. Multivariate analysis of DSC–XRD simultaneous measurement data: a study of multistage crystalline structure changes in a linear poly(ethylene imine) thin film

    Article • Analytical and Bioanalytical Chemistry, August 2008, Springer Science + Business Media

    Professor Tetsuo Okada

  88. Ice chromatography

    Article • Journal of Chromatography A, May 2008, Elsevier

    Professor Tetsuo Okada

  89. Hydration of counterions in cation exchange resins studied by X-ray absorption fine structure

    Article • Chemical Communications, January 2008, Royal Society of Chemistry

    Professor Tetsuo Okada

  90. Designs and Analytical Exploitation of Novel Separation Fields

    Article • BUNSEKI KAGAKU, January 2008, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  91. Electrolyte-Induced Phase Separation and Charge Reversal of Cationic Zwitterionic Micelles

    Article • Langmuir, December 2007, American Chemical Society (ACS)

    Professor Tetsuo Okada

  92. Inhibition of Aggregation of a Biomimic Peptidolipid Langmuir Monolayer by Congo Red Studied by UV−Vis and Infrared Spectroscopies

    Article • The Journal of Physical Chemistry, December 2007, American Chemical Society (ACS)

    Professor Tetsuo Okada

  93. Liquid-core waveguide in CE

    Article • Electrophoresis, October 2007, Wiley

    Professor Tetsuo Okada

  94. Hydration Structures of Bromides on Cationic Micelles

    Article • The Journal of Physical Chemistry, October 2007, American Chemical Society (ACS)

    Professor Tetsuo Okada

  95. Characterization of Bromide Ions in Charge-Stacked Zwitterionic Micellar Systems

    Article • Langmuir, August 2007, American Chemical Society (ACS)

    Professor Tetsuo Okada

  96. Structural and Thermodynamic Aspects of Ionic Solvation in Concentrated Aqueous Poly(ethylene glycol)

    Article • The Journal of Physical Chemistry, June 2007, American Chemical Society (ACS)

    Professor Tetsuo Okada

  97. Acoustic Recognition of Counterions in Ion-Exchange Resins

    Article • Analytical Chemistry, April 2007, American Chemical Society (ACS)

    Professor Tetsuo Okada

  98. Solvation of Ions in Aqueous Hydrophilic Polymer Solutions

    Article • Journal of Ion Exchange, January 2007, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  99. Evaluation of Ion-exchange Reaction by Coupled Acoustic-gravity Field

    Article • Journal of Ion Exchange, January 2007, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  100. Microparticle Separation with an Acoustic-gravity Field Controlled by Phase-shift Operation

    Article • Analytical Sciences, January 2007, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  101. Structures of 18-Crown-6 Complexes with Alkali Cations in Methanolic Solution as Studied by X-ray Absorption Fine Structure

    Article • Journal of Solution Chemistry, December 2006, Springer Science + Business Media

    Professor Tetsuo Okada

  102. Analysis of Gibbs Monolayer Adsorbed at the Toluene/Water Interface by UV−Visible Partial Internal Reflection Spectrometry

    Article • Analytical Chemistry, November 2006, American Chemical Society (ACS)

    Professor Tetsuo Okada

  103. Analysis of Structurally Heterogeneous Langmuir−Blodgett Films of Folded/Unfolded Long-Chain Molecules by Infrared Multiple-Angle Incidence Resolution Spectroscopy

    Article • Analytical Chemistry, September 2006, American Chemical Society (ACS)

    Professor Tetsuo Okada

  104. Solvation of Ions in Hydrophilic Layer of Polyoxyethylated Nonionic Micelle. Cooperative Approach by Electrophoresis and Ion-Transfer Voltammetry

    Article • The Journal of Physical Chemistry, August 2006, American Chemical Society (ACS)

    Professor Tetsuo Okada

  105. Kinetic Monitoring of Electrophoretically Induced Solute Reaction by Axial Absorption Detection with Liquid-Core Waveguide

    Article • Analytical Chemistry, July 2006, American Chemical Society (ACS)

    Professor Tetsuo Okada

  106. Ice Chromatography. Characterization of Water−Ice as a Chromatographic Stationary Phase

    Article • Analytical Chemistry, June 2006, American Chemical Society (ACS)

    Professor Tetsuo Okada

  107. Particle Separation with Ultrasound Radiation Force

    Article • Current Analytical Chemistry, April 2006, Bentham Science Publishers

    Professor Tetsuo Okada

  108. Low-capacity channel designed for particle separation with controlled electric fields and evaluation of involved forces

    Article • Journal of Chromatography A, February 2006, Elsevier

    Professor Tetsuo Okada

  109. Resolution of Small Molecules by Passage through an Open Capillary

    Article • Analytical Chemistry, September 2005, American Chemical Society (ACS)

    Professor Tetsuo Okada

  110. Local structures of ions at ion-exchange resin/solution interface

    Article • Journal of Chromatography A, August 2005, Elsevier

    Professor Tetsuo Okada

  111. Approaches to separation interfaces

    Article • Analytica Chimica Acta, May 2005, Elsevier

    Professor Tetsuo Okada

  112. Electrostatic Effects and Involvements of Solvation in Separation of Ions

    Article • BUNSEKI KAGAKU, January 2005, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  113. Solute Distribution Coupled with Laminar Flow in Wide-Bore Capillaries: What Can Be Separated without Chemical or Physical Fields?

    Article • Analytical Sciences, January 2005, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  114. Simulation of Separation Process with Laminar Flow in an Open Capillary

    Article • BUNSEKI KAGAKU, January 2005, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  115. Electrochemically induced mass exchange between electrolyte and Fe(bpy)32+-impregnated Nafion membrane

    Article • Analytica Chimica Acta, November 2004, Elsevier

    Professor Tetsuo Okada

  116. Hydration of Halide Anions in Ion-Exchange Resin and Their Dissociation from Cationic Groups

    Article • Analytical Chemistry, August 2004, American Chemical Society (ACS)

    Professor Tetsuo Okada

  117. Ion Exchange at a Surface Monolayer

    Article • Langmuir, January 2004, American Chemical Society (ACS)

    Professor Tetsuo Okada

  118. Elution Control of Microparticles with a Coupled Acoustic-Gravity Field and Orthogonal Laminar Flow

    Article • Analytical Sciences, January 2004, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  119. Capillary electrophoresis as a nanoreactor of separation capability: On-capillary reaction catalyzed by transition metal ions

    Article • Electrophoresis, July 2003, Wiley

    Professor Tetsuo Okada

  120. X-ray Absorption Fine Structure of Ions Attracted by a Zwitterionic Surface Monolayer

    Article • The Journal of Physical Chemistry, March 2003, American Chemical Society (ACS)

    Professor Tetsuo Okada

  121. Ion-Exchange at Solution Surface

    Article • Journal of Ion Exchange, January 2003, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  122. Electrostatic Approach to Chromatographic Retention of Ionic Solutes

    Article • Journal of Ion Exchange, January 2003, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  123. X-ray Absorption Fine Structure of Halide Ions in Anion-Exchange Resins

    Article • Journal of Ion Exchange, January 2003, Japan Association of Ion Exchange

    Professor Tetsuo Okada

  124. Solvation structure of ions at solution surfaces as studied by total-reflection total-conversion-electron yield X-ray absorption fine structure

    Article • BUNSEKI KAGAKU, January 2003, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  125. Solvation Structure of Bromide Ion in Anion-Exchange Resins

    Article • The Journal of Physical Chemistry, January 2002, American Chemical Society (ACS)

    Professor Tetsuo Okada

  126. X-ray Absorption Spectroscopy of Ions Attracted by Langmuir Membranes at Controlled Surface Pressures.

    Article • Analytical Sciences, January 2002, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  127. Chromatographic Probing of Electrostatic Potential

    Article • Analytical Chemistry, July 2001, American Chemical Society (ACS)

    Professor Tetsuo Okada

  128. Particle Characterization and Separation by a Coupled Acoustic−Gravity Field

    Article • Analytical Chemistry, July 2001, American Chemical Society (ACS)

    Professor Tetsuo Okada

  129. Simultaneous control of electrostatic micellar partition and electroosmotic flow-rate by anion-dominated partition into zwitterionic micelles

    Article • Journal of Chromatography A, June 2001, Elsevier

    Professor Tetsuo Okada

  130. Atomic XAFS for a Bromide Ion Bound on Anion-Exchange Resin in Water.

    Article • Analytical Sciences, January 2001, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  131. Ionic partition to zwitterionic micelles

    Article • January 2001, Elsevier

    Professor Tetsuo Okada

  132. Analysis of local structure of ion adsorbed on the gas/liquid interface

    Article • January 2001, Elsevier

    Professor Tetsuo Okada

  133. Evaluation of Electrostatic Potential Induced by Anion-Dominated Partition into Zwitterionic Micelles and Origin of Selectivity in Anion Uptake

    Article • Langmuir, November 2000, American Chemical Society (ACS)

    Professor Tetsuo Okada

  134. Chromatography–voltammetry studies on the interaction between alkali metal cations and acyclic polyethers

    Article • Journal of Electroanalytical Chemistry, July 2000, Elsevier

    Professor Tetsuo Okada

  135. Retention of Ions on Nonporous Charged Stationary Phases

    Article • Analytical Chemistry, March 2000, American Chemical Society (ACS)

    Professor Tetsuo Okada

  136. Sigmoidal retention changes caused by crown ether complexation with eluent cations in ion-exchange chromatography

    Article • Physical Chemistry Chemical Physics, January 2000, Royal Society of Chemistry

    Professor Tetsuo Okada

  137. Chromatographic determination of Gibbs free energy of transfer for crown ether and monodispersed polyoxyethylene complexes with alkali cations from methanol to acetonitrile

    Article • Physical Chemistry Chemical Physics, January 2000, Royal Society of Chemistry

    Professor Tetsuo Okada

  138. Acoustic effects in chromatography

    Article • Journal of Chromatography A, July 1999, Elsevier

    Professor Tetsuo Okada

  139. Interpretation of chromatographic behavior of ions based on the electric double-layer theory

    Article • Journal of Chromatography A, July 1999, Elsevier

    Professor Tetsuo Okada

  140. Micellar Electrokinetic Chromatographic Separation of Fe(II)/Fe(III) and Cu(I)/Cu(II) as 2-Pyridylazo Chelates

    Article • Microchemical Journal, May 1999, Elsevier

    Professor Tetsuo Okada

  141. Polyethers in inorganic capillary electrophoresis

    Article • Journal of Chromatography A, February 1999, Elsevier

    Professor Tetsuo Okada

  142. Potentiometric and chromatographic evaluation of ion uptake by zwitterionic micelles

    Article • Physical Chemistry Chemical Physics, January 1999, Royal Society of Chemistry

    Professor Tetsuo Okada

  143. Anion-modulated switching of retention properties of a zwitterionic stationary phase

    Article • Analytical Communications, January 1999, Royal Society of Chemistry

    Professor Tetsuo Okada

  144. Secondary Equilibrium Chromatographic Evaluation of Polyether Complexation Using an Anion-Exchange Resin.

    Article • Analytical Sciences, January 1999, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  145. Stationary-Phase Complexation of Crown Ethers with Polyammonium lons Chemically Bonded on Polymer Resin.

    Article • Analytical Sciences, January 1999, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  146. Ion Uptake by Zwitterionic Surfaces

    Article • Langmuir, October 1998, American Chemical Society (ACS)

    Professor Tetsuo Okada

  147. Interpretation of Ion-Exchange Chromatographic Retention Based on an Electrical Double-Layer Model

    Article • Analytical Chemistry, May 1998, American Chemical Society (ACS)

    Professor Tetsuo Okada

  148. Nonaqueous ion-exchange chromatography and electrophoresis

    Article • Journal of Chromatography A, April 1998, Elsevier

    Professor Tetsuo Okada

  149. Complexation of Polyethers in Cation Exchange Resin and Application to Chromatographic Determination of Complexation Constants in Solution

    Article • The Journal of Physical Chemistry, April 1998, American Chemical Society (ACS)

    Professor Tetsuo Okada

  150. Interpretation of Chromatographic Retention Based on Electrostatic Theories.

    Article • Analytical Sciences, January 1998, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  151. Ultrasonic effects on ion-exchange chromatographic retention

    Article • Journal of Chromatography A, January 1998, Elsevier

    Professor Tetsuo Okada

  152. Roles of Interfacial Functions in Analytical Chemistry. Interpretation of micellar chromatographic retention behaviors of ions with an electrostatic model.

    Article • BUNSEKI KAGAKU, January 1998, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  153. Micellar chromatography of inorganic compounds

    Article • Journal of Chromatography A, September 1997, Elsevier

    Professor Tetsuo Okada

  154. Crown Ether Complexation in Electrical Double Layer of Anion-Exchange Resin

    Article • The Journal of Physical Chemistry, September 1997, American Chemical Society (ACS)

    Professor Tetsuo Okada

  155. Non-aqueous capillary electrophoretic separation of Brønsted acids as heteroconjugated anions

    Article • Journal of Chromatography A, May 1997, Elsevier

    Professor Tetsuo Okada

  156. Nonaqueous anion-exchange chromatography I. Role of solvation in anion-exchange resin

    Article • Journal of Chromatography A, January 1997, Elsevier

    Professor Tetsuo Okada

  157. Nonaqueous anion-exchange chromatography II. Changing anion-exchange selectivity by resin surface complex formation of crown ethers

    Article • Journal of Chromatography A, January 1997, Elsevier

    Professor Tetsuo Okada

  158. Role of anions in the complex formation of crown ethers with ammonium ions chemically bonded on silica gel

    Article • Journal of the Chemical Society Faraday Transactions, January 1996, Royal Society of Chemistry

    Professor Tetsuo Okada

  159. Electrophoretic detection and evaluation of heteroconjugate anion formation between Brønsted acids and the perchlorate ion in acetonitrile

    Article • Chemical Communications, January 1996, Royal Society of Chemistry

    Professor Tetsuo Okada

  160. Design of Chromatographic and Electrophoretic Separation Based on Ion-Pair Formation of Aromatic Disulfonates with Polyammonium Ions

    Article • Analytical Chemistry, January 1996, American Chemical Society (ACS)

    Professor Tetsuo Okada

  161. Retention mechanism of anions in micellar chromatography: Interpretation of retention data on the basis of an ion-exchange model

    Article • Journal of Chromatography A, July 1995, Elsevier

    Professor Tetsuo Okada

  162. Multifunctional separation with polyamine-bonded resin

    Article • Analytica Chimica Acta, March 1995, Elsevier

    Professor Tetsuo Okada

  163. Non-aqueous capillary electrophoretic separation of polyethers and evaluation of weak complex formation

    Article • Journal of Chromatography A, March 1995, Elsevier

    Professor Tetsuo Okada

  164. Chromatographic separation of ions; A review on separation mechanisms.

    Article • BUNSEKI KAGAKU, January 1995, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  165. Stationary phase complexation of polyethers: Separation of polyethers with amino-bonded silica gel

    Article • Journal of Chromatography A, August 1994, Elsevier

    Professor Tetsuo Okada

  166. Multidimensional Chromatographic Separation and Characterization of Polyethers

    Article • Analytical Chemistry, July 1994, American Chemical Society (ACS)

    Professor Tetsuo Okada

  167. Efficient Chromatographic Evaluation of Crown-Ether Complexation with Alkali-Metal Ions

    Article • Analytical Chemistry, May 1994, American Chemical Society (ACS)

    Professor Tetsuo Okada

  168. Electrochemically pretreated glassy carbon as a chromatographic sensor for cationic and redox species

    Article • Analytica Chimica Acta, January 1994, Elsevier

    Professor Tetsuo Okada

  169. Effect of conformational changes on the reversed-phase chromatographic retention of polyoxyethylenes: quantitative interpretation based on a retention model in combination with molecular mechanics

    Article • Analytica Chimica Acta, September 1993, Elsevier

    Professor Tetsuo Okada

  170. Complexation of poly(oxyethylene) in analytical chemistry. A review

    Article • The Analyst, January 1993, Royal Society of Chemistry

    Professor Tetsuo Okada

  171. Simultaneous Separation of Ionic and Nonionic Compounds Using Reversed-Phase Micellar Chromatography.

    Article • Analytical Sciences, January 1993, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  172. Special Articles: Separation. Part 2. Chromatography and Capillary Electrophoresis. Separation of crown-ethers with an ion-exchange resin.

    Article • BUNSEKI KAGAKU, January 1993, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  173. Temperature-induced phase separation of nonionic polyoxyethylated surfactant and application to extraction of metal thiocyanates

    Article • Analytical Chemistry, September 1992, American Chemical Society (ACS)

    Professor Tetsuo Okada

  174. Automated analyses of non-ionic surfactants in terms of hydrophobic and polyoxyethylated chain lengths

    Article • Journal of Chromatography A, September 1992, Elsevier

    Professor Tetsuo Okada

  175. Simultaneous cation and reversed-phase chromatography

    Article • Journal of Chromatography A, August 1992, Elsevier

    Professor Tetsuo Okada

  176. Separation of poly(oxyethylene) oligomers on a cation-exchange resin and evaluation of their complexation ability

    Article • Reactive Polymers, April 1992, Elsevier

    Professor Tetsuo Okada

  177. Interpretation of retention behaviors of transition metal cations in micellar chromatography using ion-exchange model

    Article • Analytical Chemistry, March 1992, American Chemical Society (ACS)

    Professor Tetsuo Okada

  178. Secondary equilibrium size-exclusion chromatography of ions with polymeric mobile phase additives

    Article • Journal of Chromatography A, November 1991, Elsevier

    Professor Tetsuo Okada

  179. Temperature programming for separation of polyoxyethylene oligomers

    Article • Analytical Chemistry, May 1991, American Chemical Society (ACS)

    Professor Tetsuo Okada

  180. Characterization of poly(oxyethylene) complex formation with alkali-metal cations in a cation-exchange resin phase

    Article • Journal of the Chemical Society Faraday Transactions, January 1991, Royal Society of Chemistry

    Professor Tetsuo Okada

  181. Thermodynamic origin of selectivity in polyoxyethylene complexes with alkali cations

    Article • Journal of the Chemical Society Chemical Communications, January 1991, Royal Society of Chemistry

    Professor Tetsuo Okada

  182. Factors affecting selectivity in micelle exclusion chromatography of inorganic anions

    Article • Journal of Chromatography A, January 1991, Elsevier

    Professor Tetsuo Okada

  183. Complex formation of polyoxyethylenes with potassium ion at the solution/ion-exchange resin interface and their chromatographic behavior.

    Article • BUNSEKI KAGAKU, January 1991, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  184. Chromatographic detection of interaction between polyoxyethylene and nitrous acid

    Article • Analytical Chemistry, September 1990, American Chemical Society (ACS)

    Professor Tetsuo Okada

  185. Efficient evaluation of poly(oxyethylene) complex formation with alkali-metal cations

    Article • Macromolecules, September 1990, American Chemical Society (ACS)

    Professor Tetsuo Okada

  186. Indirect conductometric detection of poly(oxyethylenes) after chromatographic separation

    Article • Analytical Chemistry, April 1990, American Chemical Society (ACS)

    Professor Tetsuo Okada

  187. Chromatographic oligomer separation of poly(oxyethylenes) on potassium ion-form cation-exchange resin

    Article • Analytical Chemistry, February 1990, American Chemical Society (ACS)

    Professor Tetsuo Okada

  188. Ion-exclusion chromatography with mixed micellar mobile phases

    Article • Analytica Chimica Acta, January 1990, Elsevier

    Professor Tetsuo Okada

  189. Identification of ions in anion chromatography by stopped flow chronoamperometry

    Article • Analytical Chemistry, July 1989, American Chemical Society (ACS)

    Professor Tetsuo Okada

  190. Direct current conductivity detection in ion chromatography

    Article • Analytical Chemistry, July 1989, American Chemical Society (ACS)

    Professor Tetsuo Okada

  191. Selective detection approach to ion exclusion chromatography

    Article • Analytical Chemistry, March 1989, American Chemical Society (ACS)

    Professor Tetsuo Okada

  192. Micelle exclusion chromatography of heavy-metal cations

    Article • Analytical Chemistry, October 1988, American Chemical Society (ACS)

    Professor Tetsuo Okada

  193. Redox suppressor for ion-exclusion chromatography of carboxylic acids with conductometric detection

    Article • Analytical Chemistry, September 1988, American Chemical Society (ACS)

    Professor Tetsuo Okada

  194. Micelle exclusion chromatography of inorganic anions

    Article • Analytical Chemistry, August 1988, American Chemical Society (ACS)

    Professor Tetsuo Okada

  195. Ligand-exchange indirect conductometric detection of electrically neutral carbohydrates and alcohols after high-performance liquid chromatographic separation

    Article • Analytical Chemistry, July 1988, American Chemical Society (ACS)

    Professor Tetsuo Okada

  196. Elution characteristics of polyol—borate eluents in anion-exchange chromatography

    Article • Journal of Chromatography A, January 1987, Elsevier

    Professor Tetsuo Okada

  197. Elution characteristics of polyol—borate eluents in anion-exchange chromatography

    Article • Journal of Chromatography A, January 1987, Elsevier

    Professor Tetsuo Okada

  198. Determination of trace nitrite by ion chromatography with large volume injection; Elimination of major interferences anions with high-capacity ion exchange resin column.

    Article • BUNSEKI KAGAKU, January 1987, Japan Society for Analytical Chemistry

    Professor Tetsuo Okada

  199. High-performance liquid chromatographic determination of electrically neutral carbohydrates with conductivity detection

    Article • Analytical Chemistry, June 1986, American Chemical Society (ACS)

    Professor Tetsuo Okada

  200. High-performance liquid chromatographic determination of boric acid and germanic acid with conductometric detection

    Article • January 1986, Springer Science + Business Media

    Professor Tetsuo Okada

  201. Potassium hydroxide eluent for nonsuppressed anion chromatography of cyanide, sulfide, arsenite, and other weak acids

    Article • Analytical Chemistry, April 1985, American Chemical Society (ACS)

    Professor Tetsuo Okada

  202. Ion chromatographic determination of silicic acid in natural water

    Article • Analytical Chemistry, January 1985, American Chemical Society (ACS)

    Professor Tetsuo Okada

  203. Elimination of the peak of a major ion in anion chromatography with UV detection

    Article • Journal of Chromatography A, January 1985, Elsevier

    Professor Tetsuo Okada

  204. Trace analysis of anions by use of a back-flush method and large injection volumes in ion chromatography

    Article • Journal of Chromatography A, January 1985, Elsevier

    Professor Tetsuo Okada

  205. Formation mechanism of dip peaks in nonsuppressed ion chromatography

    Article • Analytical Chemistry, October 1984, American Chemical Society (ACS)

    Professor Tetsuo Okada

  206. Determination of Silicate By Nonsuppressed Ion Chromatography

    Article • Analytical Letters, January 1984, Taylor & Francis

    Professor Tetsuo Okada

  207. Sensitivity of non-suppressed ion chromatography using divalent organic acids as eluents

    Article • Journal of Chromatography A, January 1984, Elsevier

    Professor Tetsuo Okada

  208. Nonsuppressor ion chromatography of inorganic and organic anions with potassium hydroxide as eluent

    Article • Analytical Chemistry, June 1983, American Chemical Society (ACS)

    Professor Tetsuo Okada