减量分光光度法测定高含量铜  

Determination of High Concentration Copper by Decreased Quantity Spectrophotometry

作　　者：苏玉芹[1] 成永强[1] 石生勋[1] 王福[1] 孙立彪[1] 

机构地区：[1]河北大学化学与环境科学学院,河北省保定市07002

出　　处：《光谱实验室》2007年第3期419-422,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：在测定高含量铜时,加入定量的掩蔽剂EDTA来掩蔽体系中绝大部分的铜,控制剩余铜量符合在郎伯-比耳定律的范围内,再在缓冲溶液体系下,加入双环己酮草酰二腙溶液使其显色,测定吸光度。建立了高含量铜的减量分光光度法。实验结果准确,精密度高。A new decreased quantity spectrophotometry for the determination of high concentration copper was developed based on the quantificational EDTA addition to mask the most of copper and the controlled remaining small quantity of copper to meet the need of Beer＇s law. The remaining small quantity of copper take part in the color reaction with bis （cyclohexanone） oxalyldihydrazone （BCO） in a acetate buffer solution,then was measured by spectrophotometry. The method is accurate and orecise.

关 键 词：高含量铜 定量掩蔽 减量分光光度法 

分 类 号：O657.32[理学—分析化学]