6Shigehiro K,Yasuko A,Kiyoshi H.Separation and concentration of trace lead by coprecipitation with yttrium phosphate[J].Chemistry Letters,2000,19(4):208.
7Aanassova D,Stefanova V,Russeva E.Co-precipitative pre-concentration with sodium di-ethyldithiocarbamate and ICP-AES determination of Se,Cu,Pb,Zn,Fe,Co,Ni,Mn,Cr and Cd in water[J].Talanta,1998,47(4):1237.
8Ltif E,Ugur S,Sibel O.Determination of trace amounts of some metals in samples with high salt content by atomic absorption spectrometry after cobalt-diethyldithiocarbamate coprecipitation[J].Talanta,1997,44(2):1017.
