Spektrochemische bestimmung von sulfat bzw. Chlorid mit roentgenfluoreszenz nach anreicherung durch mitfällung an BaCrO4 BZW. AgSCN aus verdünnten lösungen |
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Authors: | B. Magyar G. Kaufmann |
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Affiliation: | Laboratorium für Anorganische Chemie, Eidg. Techn. Hochschule, Zürich, Schweiz |
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Abstract: | Sulphate and chloride are quantitatively co-precipitated from dilute solutions (10?5- 10?4M) with BaCrO4 and AgSCN respectively, and determined in the precipitate by X-ray fluorescence spectroscopy. Ratios of count-rates IS/ICr and ICl/ISfor the appropriate Kα-lines are used for quantitative evaluation by comparison with reference standards prepared the same way. The method enables both sulphate and chloride to be determined in 50–100 ml of tap-water with a reproducibility of about 3%. |
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