Adsorption von Spuren von Insecticiden aus Wasser an Polyäthylen |
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Authors: | K Beyermann W Eckrich |
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Institution: | 1. Institut für Spektrochemie und angewandte Spektroskopie, Dortmund
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Abstract: | Trace elements such as Bi, Cu, Ni, Pb, Ag, Au, and Pd that are present in high-purity cadmium can be enriched, if the cadmium is coated with a thin layer of mercury before dissolution in dilute nitric acid up to a small residue. For determination of the trace elements, the residue is completely dissolved in nitric acid. Bi, Cu, Ni, and Pb are determined after separation of the mercury; Ag, Au, and Pd are determined in the solution containing the mercury. The determination is made by atomic absorption spectroscopy. The following amounts can be determined (in ppm): Cu 0.02; Ag 0.05; Au 0.1; Bi, Ni, Pb, Pd 0.2. |
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