Studies on the Photochemical-Fluorimetric Method (Ⅱ)--Detarmination of Trace Chromium (Ⅵ) in Water by Using Catalytic-Kinetic Photochemical Fluorimetry

Abstract

Abstract: Anew catalytic-kinetic photochemical fluorimetry for the determination of Cr(Ⅵ) in water is discrtibed. The method is based on the catalytic effect of Cr(Ⅵ) on the photo-oxidation reaction of Rivanol. Abetter linear relationship curve was obtained over the range of 1-200 ng/mL Cr(Ⅵ) and the relative standard deviation of the determination was 2. 3. This method has been applied to the direct determination of trace amounts of Cr(Ⅵ) in water with a good result. The mechanism for the photo-oxidation reaction of Rivanol catalyzed by Cr(Ⅵ) was discussed and a kinetic equation was given.

Key words: Determination of chromium(Ⅵ), Photochemical fluorimetry, Kinetic

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Guo Xiang-qun, Xu Jin-gou, Shen Kun . Studies on the Photochemical-Fluorimetric Method (Ⅱ)--Detarmination of Trace Chromium (Ⅵ) in Water by Using Catalytic-Kinetic Photochemical Fluorimetry[J]. Chem. J. Chinese Universities, 1991, 12(4): 454.

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Studies on the Photochemical-Fluorimetric Method (Ⅱ)--Detarmination of Trace Chromium (Ⅵ) in Water by Using Catalytic-Kinetic Photochemical Fluorimetry

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