Pure Appl. Chem., 1991, Vol. 63, No. 9, pp. 1221-1226
http://dx.doi.org/10.1351/pac199163091221
Preconcentration by coprecipitation of lead and selenium with Ni/pyrrolidine dithiocarbamate complex and their simultaneous determination by internal standard atomic absorption spectrometry with the solid sampling technique
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