污染水中铜离子浓度的快速测定  

Determination of copper ions in polluted water

作　　者：杨润萍[1] 李晓霞[1] 丁磊[2] 陈微[1] 金光霞[1] 张冬梅[1] 

机构地区：[1]沈阳市于洪区疾病预防控制中心,沈阳110141 [2]沈阳市于洪区卫生监督所,沈阳110141

出　　处：《中国卫生检验杂志》2007年第12期2217-2218,2345,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立污染水中铜离子浓度分光光度法测定方法。方法：在pH=9的氨溶液中，铜离子与二乙基二硫代氨基甲酸钠作用，生成摩尔比为1：2的黄棕色胶体配合物，在452nm处测定A值，标准曲线法定量铜离子的浓度。结果：铜离子浓度在0．10～2．5μg／ml时，A与铜离子浓度之间具有良好的线性关系，相关系数r为0．9999，回收率为95．8％～102．9％，可获得较好的准确度和精密度。结论：它是测定被铜污染的水质的有效方法，用此方法测水中铜离子的浓度可获得较高的准确度，本方法可行。Objective：To establish the determination of copper ions by using spectrophotometric method. Methods：In the am-monium hydroxide with pH value 6.2, copper ions effected with dithiocarb, and produce yellow-amber colloid compound. The mole ratio was 1：2. To determine value A in the wave of 452 nm. To quantitate the concentration of copper ions by standard curve. Results：When the concentration of copper ions is between 0. 10 and 2.5 μg/ml, the linear relationship is good between A and the concentration of copper ions, the value of coefficient correlation, r is 0. 999, recovery rate is 95. 8% - 102. 9%, the degree of accuracy and precision is high. Conclusion：It is effective to determine the copper polluted water by this method, and the degree of accuracy is higher. So the method is feasible.

关 键 词：铜试剂 铜 污染水 

分 类 号：R123.1[医药卫生—环境卫生学]