Heavy metal analysis of rainwaters by nuclear related techniques. Application of APDC precipitation and energy dispersive X-ray fluorescence

Establishment of a procedure for the determination of several metals in rainwater, which includes a concentration step by precipitation with APDC, preceding the EDXRF determination is discussed. The influence of different factors (the repose time of the precipitate, the concentrations of APDC, the metal carrier and the oxidant agent, and others) upon the metal precipitation and filtration was investigated. An absolute EDXRF method was used for the quantification of the Fe, Co, Ni, Cu, Zn and Pb contents. (author)