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  1. Solid Phase Extraction of Trace Elements in Water and Tissue Samples on a Mini Column with Diphenylcarbazone Impregnated Nano-TiO2and Their Determination by Inductively Coupled Plasma Optical Emission Spectrometry
  2. Chelating polymers and related supports for separation and preconcentration of trace metals
  3. Preconcentration of trace metals with dithiocarbamate-chitin.