节点文献
2-(2-喹啉偶氮)-4,5-二甲基苯酚光度法测定水中的铜
Spectrophotometric Determination of Copper in Water with 2-(2-Quinolinlazo)-4,5-Dimethylhydroxybenzen
【摘要】 研究了2-(2-喹啉偶氮)-4,5-二甲基苯酚(QADMP)与铜(Ⅱ)的显色反应,在pH为4 0的HAc-NaAc缓冲介质中,CTMAB存在下,QADMP与铜(Ⅱ)生成分子比为2∶1的稳定红色配合物,该配合物λmax=561nm,摩尔吸光系数ε为4 56×104L·mol-1·cm-1,铜(Ⅱ)含量在0~0 4mg/L内符合比耳定律,该方法用于水样中微量铜的测定,结果满意。
【Abstract】 The color reaction of copper (Ⅱ) with 2-(2-Quinolinlazo)-4,5-Dimethylhydroxybenzen was studied. In the presence of pH = 4.0 HAc-NaAc buffer solution and CTMAB medium, QADMP reacts with copper (Ⅱ) to form a stable 2∶1 complex. The molar absorption is 4.56×104 L·mol-1·cm-1 at 561 nm. The content of copper is in range of 0~0.4 mg/L that obeys Beer’s law. This method can be applied to the determination of copper in water with satisfactory results.
【关键词】 2-(2-喹啉偶氮)-4,5-二甲基苯酚;
铜(Ⅱ);
分光光度法;
【Key words】 2-2Quinolinlazo-4,5-Dimethylhydroxybenzen; copper(Ⅱ); spectrophotometry;
【Key words】 2-2Quinolinlazo-4,5-Dimethylhydroxybenzen; copper(Ⅱ); spectrophotometry;
【基金】 国家烟草专卖局科研基金(2001-B205)资助课题
- 【文献出处】 干旱环境监测 ,Arid Environmental Monitoring , 编辑部邮箱 ,2005年02期
- 【分类号】X832
- 【被引频次】1
- 【下载频次】48