| 铬兰黑R-H_2O_2催化光度法测定痕量锌 |
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| 引用本文： | 金建忠.铬兰黑R-H_2O_2催化光度法测定痕量锌[J].广州化学,2003,28(3):34-36. |
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| 作者姓名： | 金建忠 |
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| 作者单位： | 浙江树人大学,轻工与环保学院,浙江,杭州,310015 |
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| 摘 要： | 研究了在稀硫酸介质中,Zn催化过氧化氢氧化铬兰黑R褪色反应,建立了测量痕量锌的新方法,Zn2+ 的检测限为1.5×10-10g/mL,线性范围为 0 ~ 3.1×10-2 mg / mL,该法用于测定头发中的痕量锌,结果满意。
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| 关 键 词： | 锌 铬兰黑R 过氧化氢 催化光度法 |
| 文章编号： | 1009-220X(2003)03-0034-03 |
| 修稿时间： | 2003年4月15日 |
Catalytic Spectrophotometric Determination of Trace Zinc |
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| JIN Jian-zhong.Catalytic Spectrophotometric Determination of Trace Zinc[J].Guangzhou Chemistry,2003,28(3):34-36. |
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| Authors: | JIN Jian-zhong |
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| Abstract: | A new method to determine trace Zn2+ is formed according to the decolorizing reaction catalyzed by Zn2+ which results from the oxidation of erio chrome blueblack R by hydrogen peroxide in H2SO4 medium. The decrease in color is in proportion to the amount of Zn2+. The method is highly sensitive with the minimum quantitative determination being 1.5?0-10 g/mL. The linear respondence ranges between 0 to 3.1?0-2 mg/mL. The method has been used to determine trace Zn2+ in hair with satisfactory results. |
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| Keywords: | zinc erio chrome blueblack R hydrogen peroxide catalytic spectrophotometry |
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