Highly Sensitive Colour System of Selenium (Ⅳ)-Potassium Iodide-Malachite Green and Its Analytical Application

Wen Meijuan; Zhu Lin

doi:10.13374/j.issn1001-053x.1996.01.020

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Wen Meijuan, Zhu Lin. Highly Sensitive Colour System of Selenium (Ⅳ)-Potassium Iodide-Malachite Green and Its Analytical Application[J]. Chinese Journal of Engineering, 1996, 18(1): 88-91. doi: 10.13374/j.issn1001-053x.1996.01.020

Citation:

Wen Meijuan, Zhu Lin. Highly Sensitive Colour System of Selenium (Ⅳ)-Potassium Iodide-Malachite Green and Its Analytical Application[J]. Chinese Journal of Engineering, 1996, 18(1): 88-91. doi: 10.13374/j.issn1001-053x.1996.01.020

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Highly Sensitive Colour System of Selenium (Ⅳ)-Potassium Iodide-Malachite Green and Its Analytical Application

doi: 10.13374/j.issn1001-053x.1996.01.020

Department of Chemistry, USTB, Beijing 100083, PRC

Received Date: 1995-05-10
Available Online: 2021-10-29

Abstract

Abstract

The highly sensitive colour system of Selenium (Ⅳ)-Potassium iodide-Malachite green was studied. The optimum conditions of this system using spectrophotometry were determined, and the reaction mechanism was discussed. It is feasible to use this method at room temperature. Both of the sensetivity and reproducibility are satisfactory. The molar absorptivity is 1.2 × 10⁵ 1 · mol^-1· cm^-1.Beer's law is obeyed in the range of 0~0.32μg/ml. It has been successfully used in determinining the trace selenium presented in water.
- spectrophotometry,
- selenium,
- micro-analysis