摘要：In the atomic absorption spectroscopic determination of cadmium, ammonium pyrrolidyldithiocarbamate (APDC) was used as the chelating reagent but it was found that sodium diethyldithiocarbamate (DDTC) was better than APDC. Cadmium pyrrolidyldithiocarbamate was slightly soluble in most organic solvents and fairly soluble only in methyl isobutyl ketone, but cadmium diethyldithiocarbamate was easily soluble in most organic solvents. Therefore, extraction efficiency of cadmium complex from the aqueous solution with methyl isobutyl ketone was very good in the case of cadmium diethyldithiocarbamate. This experimental fact resulted in the simplified procedure and high recovery ratio.
