All Stories

  1. On-site colorimetric quantification of cannabidiol in commercial oils using a portable photometer

    Article • Forensic Chemistry, July 2026, Elsevier

    Professor Sidnei Goncalves Silva

  2. Toward Portable and Affordable Air Quality Monitoring: A 3D-Printed Platform for Colorimetric NO 2 Quantification from Vehicles’ Exhaust Emissions

    Article • ACS Omega, February 2026, American Chemical Society (ACS)

    Professor Sidnei Goncalves Silva

  3. Smart-PAD: A multi-channel mechanized approach for high-throughput paper-based colorimetric analysis: Determination of ammonia via the Berthelot reaction

    Article • Analytica Chimica Acta, January 2026, Elsevier

    Professor Sidnei Goncalves Silva

  4. A Compact Multicommuted Flow Platform Using Independent Mini Peristaltic Pumps and Multichannel Optical Detection with potential for IoT integration

    Article • January 2026, Elsevier

    Professor Sidnei Goncalves Silva

  5. Beyond RGB: Integration of an 8-Channel Digital Light Sensor into a Fully Automated Platform for Colorimetric Sensor Arrays

    Article • Analytical Chemistry, September 2025, American Chemical Society (ACS)

    Professor Sidnei Goncalves Silva

  6. Modular “Plug-and-Play” Photometer Based on IoT Digital Light Sensors: A DIY Approach for In Situ Analysis

    Article • ACS Omega, May 2025, American Chemical Society (ACS)

    Professor Sidnei Goncalves Silva

  7. Simultaneous reflectance and fluorescence measurements for portable formaldehyde determination in milk using a multi-channel spectrometer sensor

    Article • Food Chemistry, February 2025, Elsevier

    Professor Sidnei Goncalves Silva

  8. 3D-Printed Liquid Handling Robot for the Development of Automated Analytical Methods

    Article • Journal of the Brazilian Chemical Society, January 2025, Sociedade Brasileira de Quimica (SBQ)

    Professor Sidnei Goncalves Silva

  9. Evaluation of the performance of 3D printed (spectro)photometers based on multi-channel color sensors for colorimetric determinations

    Article • Analytical Methods, January 2024, Royal Society of Chemistry

    Professor Sidnei Goncalves Silva

  10. Modular Photometer: A Diy Approach to Analytical Chemistry and in Situ Analysis

    Article • January 2024, Elsevier

    Professor Sidnei Goncalves Silva

  11. AirQuality Lab-on-a-Drone: A Low-Cost 3D-Printed Analytical IoT Platform for Vertical Monitoring of Gaseous H2S

    Article • Analytical Chemistry, September 2023, American Chemical Society (ACS)

    Professor Sidnei Goncalves Silva

  12. Development of a portable optical device with a multi-channel spectrometer sensor for quantification of glycerol in wine: a maker approach for on-site analysis

    Article • Analytical Methods, January 2023, Royal Society of Chemistry

    Professor Sidnei Goncalves Silva

  13. A palm-sized wireless device for colorimetric nitrite determination in water

    Article • Microchemical Journal, December 2022, Elsevier

    Professor Sidnei Goncalves Silva

  14. An Automated, Self-Powered, and Integrated Analytical Platform for On-Line and In Situ Air Quality Monitoring

    Article • Chemosensors, November 2022, MDPI AG

    Professor Sidnei Goncalves Silva

  15. RGB color sensor for colorimetric determinations: Evaluation and quantitative analysis of colored liquid samples

    Article • Talanta, May 2022, Elsevier

    Professor Sidnei Goncalves Silva

  16. Internet of Things as a Tool for Sustainable Analytical Chemistry: A Review

    Article • Journal of the Brazilian Chemical Society, January 2022, Sociedade Brasileira de Quimica (SBQ)

    Professor Sidnei Goncalves Silva

  17. An IoT optical sensor for photometric determination of oxalate in infusions

    Article • Microchemical Journal, September 2021, Elsevier

    Professor Sidnei Goncalves Silva

  18. PERFORMING RELIABLE ABSORBANCE AND FLUORESCENCE MEASUREMENTS WITH LOW BUDGET – A TUTORIAL FOR BEGINNERS

    Article • January 2021, Sociedade Brasileira de Quimica (SBQ)

    Professor Sidnei Goncalves Silva

  19. A multi-pumping flow system for spectrophotometric determination of oxalate in tea

    Article • Microchemical Journal, September 2020, Elsevier

    Professor Sidnei Goncalves Silva

  20. High-throughput screening of cocaine, adulterants, and diluents in seized samples using capillary electrophoresis with capacitively coupled contactless conductivity detection

    Article • Talanta, September 2020, Elsevier

    Professor Sidnei Goncalves Silva

  21. Voltammetric Determination of Free and Total Manganese in Tea Infusions

    Article • Journal of the Brazilian Chemical Society, January 2020, Sociedade Brasileira de Quimica (SBQ)

    Professor Sidnei Goncalves Silva

  22. Indirect determination of formaldehyde by square-wave voltammetry based on the electrochemical oxidation of 3,5–diacetyl–1,4–dihydrolutidine using an unmodified glassy-carbon electrode

    Article • Talanta, June 2019, Elsevier

    Professor Sidnei Goncalves Silva

  23. Screen-printed electrodes for quality control of liquid (Bio)fuels

    Article • TrAC Trends in Analytical Chemistry, November 2018, Elsevier

    Professor Sidnei Goncalves Silva

  24. Iron and selenium speciation in enriched adzuki bean sprouts after fractionation procedures by graphite furnace atomic absorption spectrometry

    Article • Journal of Analytical & Pharmaceutical Research, March 2018, MedCrave Group LLC

    Professor Sidnei Goncalves Silva

  25. A flow injection procedure using Layered Double Hydroxide for on line pre-concentration of fluoride

    Article • Talanta, February 2018, Elsevier

    Professor Sidnei Goncalves Silva

  26. A Multicommuted Flow System for Spectrophotometric Determination of Formaldehyde in Mushroom

    Article • Journal of the Brazilian Chemical Society, January 2018, Sociedade Brasileira de Quimica (SBQ)

    Professor Sidnei Goncalves Silva

  27. Solenoid Micro-Pumps: A New Tool for Sample Introduction in Batch Injection Analysis Systems with Electrochemical Detection

    Article • Electroanalysis, November 2017, Wiley

    Mr Eduardo Mathias Richter, Professor Sidnei Goncalves Silva

  28. Electrochemically Reduced Graphene Oxide for Forensic Electrochemistry: Detection of Cocaine and its Adulterants Paracetamol, Caffeine and Levamisole

    Article • Electroanalysis, September 2017, Wiley

    Mr Eduardo Mathias Richter, Professor Sidnei Goncalves Silva

  29. Tungsten coil atomic emission spectrometry combined with dispersive liquid–liquid microextraction: A synergistic association for chromium determination in water samples

    Article • Talanta, February 2016, Elsevier

    Dr Antonio Canals, Professor Sidnei Goncalves Silva

  30. Evaluation of Mg and Mn determination in water and plants using continuum source tungsten coil atomic fluorescence spectrometry

    Article • Microchemical Journal, November 2014, Elsevier

    Professor Sidnei Goncalves Silva, Professor George L. Donati

  31. Magnesium nitrate as a chemical modifier to improve sensitivity in manganese determination in plant materials by tungsten coil atomic emission spectrometry

    Article • Journal of Analytical Atomic Spectrometry, January 2014, Royal Society of Chemistry

    Professor Sidnei Goncalves Silva, Professor George L. Donati

  32. Direct determination of sodium, potassium, chromium and vanadium in biodiesel fuel by tungsten coil atomic emission spectrometry

    Article • Analytica Chimica Acta, January 2014, Elsevier

    Professor Sidnei Goncalves Silva, Professor George L. Donati

  33. Cobalt as chemical modifier to improve chromium sensitivity and minimize matrix effects in tungsten coil atomic emission spectrometry

    Article • Analytica Chimica Acta, May 2013, Elsevier

    Professor Sidnei Goncalves Silva, Professor George L. Donati

  34. An environmentally friendly analytical procedure for nickel determination by atomic and molecular spectrometry after cloud point extraction in different samples

    Article • Analytical Methods, January 2012, Royal Society of Chemistry

    Dr Fábio R P Rocha, Professor Sidnei Goncalves Silva

  35. Sequential spectrofluorimetric determination of free and total glycerol in biodiesel in a multicommuted flow system

    Article • Fresenius Journal of Analytical Chemistry, May 2011, Springer Science + Business Media

    Dr Fábio R P Rocha, Professor Sidnei Goncalves Silva

  36. Exploiting Mn(III)/EDTA complex in a flow system with solenoid micro-pumps coupled to long pathlength spectrophotometry for fast manganese determination

    Article • Microchemical Journal, May 2011, Elsevier

    Dr Fábio R P Rocha, Professor Sidnei Goncalves Silva

  37. A flow injection procedure based on solenoid micro-pumps for spectrophotometric determination of free glycerol in biodiesel

    Article • Talanta, December 2010, Elsevier

    Professor Sidnei Goncalves Silva, Dr Fábio R P Rocha

  38. A green analytical procedure for determination of copper and iron in plant materials after cloud point extraction

    Article • Journal of the Brazilian Chemical Society, January 2010, FapUNIFESP (SciELO)

    Dr Fábio R P Rocha, Professor Sidnei Goncalves Silva

  39. Cloud point extraction to avoid interferences by structured background on nickel determination in plant materials by FAAS

    Article • Analytical Methods, January 2009, Royal Society of Chemistry

    Dr Fábio R P Rocha, Professor Sidnei Goncalves Silva