Flow-injection catalytic kinetic determination of manganese using stopped-flow and gradient calibration |
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| Authors: | Jiannan Yang Chenglong Ma Shuliang Zhang Zhao Shen |
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| Institution: | Chemistry Department, Liaoning University, Shenyang 110036 China;Analytical Research Centre, Shenyang University, Shenyang China |
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| Abstract: | Based on the principle of Mn(II) catalysis of the Tiron-hydrogen peroxide reaction, a catalytic kinetic spectrophotometric determination of traces of manganese (ca. 10?7 M) by flow injection was established. In combination with a microcomputer, by using gradient dilution and the stopped-flow method, onlya single standard solution was needed for calibration. The method has a high selectivity and a sampling rate of 40 h?1. Traces of manganese in natural water were determined with a maximum relative standard deviation of 5.5% (n = 6). |
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| Keywords: | Manganese Waters |
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