Spectrophotometric determination of micro amounts of mercury,cadmium, and zinc by stepwise extraction with tribenzylamine |
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| Authors: | Kayoko Nakamura T Ozawa |
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| Institution: | Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, Meguroku, TokyoJapan |
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| Abstract: | A rapid spectrophotometric method has been developed for the stepwise determination for mercury, cadmium, and zinc in mixtures. Optimal conditions have been established for the extraction efficiency of cadmium and mercury with a chloroform solution of tribenzylamine pre-equilibrated with hydrobromic acid. After addition of dithizone solution to the organic layers the absorbance at 490 nm or 510 nm is measured for mercury or cadmium, respectively. Even when the ratio of mercury, cadmium, and zinc is 10-1 : 1 : 10-5 , the metals can be determined successively. |
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| Keywords: | Department of Environmental Chemistry Faculty of Technology Saitama University Urawa-shi Saitama (Japan) |
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