| 催化荧光法测定痕量铬(Ⅵ)的研究—铬(Ⅵ)—溴酸钠—还原型罗丹明B体系 |
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| 引用本文： | 张勇,张兰芳,董良,周漱萍.催化荧光法测定痕量铬(Ⅵ)的研究—铬(Ⅵ)—溴酸钠—还原型罗丹明B体系[J].河南师范大学学报(自然科学版),1993(3). |
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| 作者姓名： | 张勇 张兰芳 董良 周漱萍 |
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| 作者单位： | 河南师范大学化学系，河南师范大学化学系，化河南师范大学学系，河南师范大学化学系 |
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| 摘 要： | 基于铬(Ⅵ)对BrO_3~-—还原型罗丹明B体系的催化作用。本文建立了一种荧光增强测定痕量铬(Ⅵ)的新方法。运用固定时间法研究了该方法的最佳反应条件。其线性范围为4.0～32.0ng/ml,检出限为1.6ng/ml。
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| 关 键 词： | 催化荧光法 荧光增强 铬(Ⅵ) |
Catalytic-Fluorometric Determination of Trace Chromium(Ⅵ)——Cr(Ⅵ)-Bromate-Reduced Rhodamine B System |
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| Zhang Yong,Zhang Lanfang,Dong Liang,Zhou Shuping Departement of Chemistry.Catalytic-Fluorometric Determination of Trace Chromium(Ⅵ)——Cr(Ⅵ)-Bromate-Reduced Rhodamine B System[J].Journal of Henan Normal University(Natural Science),1993(3). |
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| Authors: | Zhang Yong Zhang Lanfang Dong Liang Zhou Shuping Departement of Chemistry |
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| Institution: | Zhang Yong;Zhang Lanfang;Dong Liang;Zhou Shuping Departement of Chemistry |
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| Abstract: | A new catalytic-fluorometric method based on the bromate oxidation of ReducedRhodamine B catalyzed by Chromiun(VI)for the determination of trace Chromium(VI)has been estab-lished.The optimum reaction conditions are obtained with fixed time method.Under the optimum condi-tions,the enhancement of the intensity of fluorescence is proportional to the concentration ofChromium(vI)over the range 4.0-32.0ng/ml.The limit of detection is 1.6ng/ml.This method has beensuccssfully used in the determination of Chromium(VI)in polluted water. |
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| Keywords: | catalytic-fluorometry fluorescence enhancement Cr(VI) |
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