Synergistic influence of Zn(II) in the extraction-atomic-absorption determination of trace cadmium in waters.
A very simple and rapid procedure is described in which the addition of a large amount of Zn(II) to a water sample before extraction by 2-mercaptobenzothiazole into n-butyl acetate brings about almost total extraction of Cd and allows determination of concentrations down to at least 0.02 ng/ml. High precision is achieved, and the interference of cyanide is also overcome.
Doolan
K J
KJ
Department of Analytical Chemistry University of New South Wales Sydney, N.S.W., Australia.
Smythe
L E
LE