Determination of cobalt, copper, mercury, and nickel as bis(2-hydroxyethyl)dithiocarbamate complexes by high-performance liquid chromatography

Ammonium bis(2-hydroxyethyl)dithiocarbamate (HEDC) is used as a precolumn derivatizing reagent for the reversed-phase HPLC determination of Co(II), Cu(II), Hg(II), and Ni(II). The metal-HEDC complexes are soluble in water, which eliminates the need to extract them into an organic solvent prior to an...

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