抗坏血酸还原钙试剂动力学光度法测定蒙药和发样中痕量铜  

A Kinetic Spectrophotometric Method of Reduction of Calcon with Ascorbic Acid for Determination of Trace Copper(Ⅱ) in Mongolian Medicine and Hair Sample

作　　者：莎仁[1] 张志颖[1] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,呼和浩特010022

出　　处：《应用化学》2006年第10期1179-1181,共3页Chinese Journal of Applied Chemistry

基　　金：内蒙古自治区自然科学基金资助项目(200408020213)

摘　　要：在乙酸-乙酸钠缓冲介质中,以邻菲罗啉为活化剂,痕量铜（Ⅱ）对抗坏血酸还原钙试剂褪色反应有灵敏的催化作用。研究了该反应的最佳实验条件和动力学参数,建立了测定痕量铜的新方法。方法的检出限为1.54×10^-10g/mL,线性范围为0-1.1×10^-7g/mL,用于测定蒙药和人头发样品中痕量铜,结果令人满意。In an acetic acid-sodium acetate buffer medium, trace amounts of copper has sensitive catalytic activity toward the reduction of calcon with ascorbic acid in the presence of active agent O-phenanthroline. The optimum condition and kinetic parameter of the reaction were studied and a new method was established for the determination of trace amounts of copper. The detection limit in this method is 1.54 × 10^-10 g/mL. The linear range is between 0 - 1.1 × 10 ^-7 g/mL. This method was applied to the determination of copper in Mongolian medicine and hair sample with satisfactory results.

关 键 词：铜(Ⅱ) 钙试剂 动力学光度法 

分 类 号：O657.3[理学—分析化学]