A new catalytic polarographic system for determination of trace amounts of tungsten |
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| Authors: | Dan D Re J |
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| Affiliation: | Department of Applied Chemistry, Chengdu College of Geology, Chengdu, Sichuan, People's Republic of China. |
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| Abstract: | A new catalytic polarographic system for the determination of trace amounts of tungsten is described. It is found that the tungsten-2-mercaptobenzothiazole (MBT) complex yields a sensitive catalytic hydrogen wave at -1.10 V (vs. SCE) in strongly acidic medium. The peak height is a linear function of tungsten concentration over the range 0.004-1.4 mug/ml in 0.9M H(2)SO(4)-20 mg/ml NaCl-0.01 mug/ml MBT medium. The method can be applied for determination of trace amounts of tungsten in geochemical materials. |
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