| 催化分光光度法测定痕量镉 |
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| 引用本文： | 谭广辉,周谨.催化分光光度法测定痕量镉[J].光谱实验室,2010,27(5):1893-1895. |
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| 作者姓名： | 谭广辉 周谨 |
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| 作者单位： | 惠州市职业病防治院,广东省惠州市鹅岭北路横街14号,516008 |
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| 摘 要： | 基于在硫酸介质中,镉能催化溴酸钾氧化甲基红的褪色反应,建立了催化分光光度法测定痕量镉的新方法。方法的线性范围为0.02—0.50μg/mL,检出限6.7×10-3μg/mL。RSD为2.92%、3.54%,样品加标回收率为96.0%、103.5%。该方法简便快速,常见物质干扰小,用于环境水样痕量镉的测定,结果满意。
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| 关 键 词： | 催化分光光度法 镉 甲基红 |
Determination of Trace Cadmium by Catalytic Spectrophotometry |
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| TAN Guang-Hui,ZHOU Jin.Determination of Trace Cadmium by Catalytic Spectrophotometry[J].Chinese Journal of Spectroscopy Laboratory,2010,27(5):1893-1895. |
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| Authors: | TAN Guang-Hui ZHOU Jin |
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| Institution: | TAN Guang-Hui ZHOU Jin(Huizhou Institute of Occupational Diseases Control and Prevention,Huizhou,Guangdong 516008,P.R.China) |
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| Abstract: | A new discoloring spectrophotometric method for the determination of trace cadmium was established based on the discolor reaction of cadmium to methyl red（MR）in sulfuric acid medium.The linear range and the determination limit for cadmium were 0.02—0.50μg/mL and 6.7×10-3μg/mL,respectively.The RSD was 2.92% and 3.54% and the recovery was 96.0%,103.5%.It is quick and simple with little interference.It can be applied to the determination of trace cadmium in water samples of environment with satisfactory results. |
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| Keywords: | Catalytic Spectrophotometry Cadmium Methyl Red |
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