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DETTERMIINATTIION OFF ZZIINC CONTTENTT IIN WATTER SAMPLLES
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DETTERMIINATTIION OFF ZZIINC CONTTENTT IIN WATTER SAMPLLES |
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INTRODUCTION The method is designed to measure mass concentration of zinc in samples of natural, drinking and waste water by fluorometric method using the FLUORAT® -02 analyzer.
MEASUREMENT METHOD Fluorescence method of measuring zinc mass concentration is based on determination of a coordination compound of zinc ions with 8- mercapto-quinoline in the acetate buffer medium (pH 4.6–4.9). The coordination compound is extracted by chloroform, and the change in the fluorescence intensity of the extract using the FLUORAT® -02 analyzer. The 8,8'-diquinolyl disulfide is used to eliminate the interfering influence of copper, and 1,10-phenanthroline is used to eliminate the interference of iron.
