Development of Preconcentration Techniques for the Determination of Cadmium, Copper, Lead and Zinc in Sea Water in Conjunction with Flame Atomic Absorption Spectrophotometry

摘要

Cd, Cu, Pb and Zn could be concentrated from sea water by adsorption on a column of chelex-100 at pH 7.6. After elution with 2M HNO sub 3 the contents of the elements were determined by an atomic absorption spectrophotometer. The adsorption of the 1-pyrrolidine dithiocarbamate complexes of Cd, Cu and Zn on chromosorb W-DMCS was found to be between 80-100%. After elution with chloroform and strip-back with 6M HNO sub 3 the contents of the elements were determined by an atomic absorption spectrophotometer. The analytical results of 5 samples through the two preconcentration methods agree well with one another. (Atomindex citation 14:757593)