Abstract
Some derivatives of dithiocarbamate including Zn-di-n-butyldithiocarbamate, Zn-ethylphenyldithiocarbamate and Zn-dimethyldithiocarbamate were used as coloring reagents in spectrophotometric method for copper and satisfactory results were obtained.
After dissolution of a sample with acids, copper could be extracted into carbon tetrachloride from fairly strong acidic solution with either Zn-DNB or Zn-EPC.
Zn-DNB and Zn-EPC methods were more sensitive than diethyldithiocarbamate method and were recommended for a rapid microgram determination of copper. Zn-DMC was useful in an alkaline solution as well as diethyldithiocarbamate.
