摘要
本文研究了ＯＰ存在下，５－Ｂｒ－ＰＡＤＡＰ与铜的灵敏显色反应。结果表明，在ｐＨ９的硼酸－硼砂缓冲溶液中，铜与５－Ｂｒ－ＰＡＤＡＰ生成红色配合物，在５５０ｎｍ处测得表观摩尔吸光系数为１．６７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。铜量在０－８μｇ／２５ｍＬ符合比耳定律。用于测定铅样中微量铜，结果满意。
The colour reaction of copper(Ⅱ) with 5 Br PADAP has been studied in the presence of OP,the red complex is formed in a buffer solution of H 3BO 3 Na 2B 4O 7 at pH 9,the apparent molar absorptivity reached 1.67×10 5L·mol -1 ·cm -1 at the wavelength of 550nm.Beer′s law is obeyed in the range of 0-8μg/25mL for copper.Satisfactory results were obtained for determination of microamounts copper in the samples of lead.
出处
《光谱实验室》
CAS
CSCD
1999年第2期186-188,共3页
Chinese Journal of Spectroscopy Laboratory
关键词
铜
PADAP
显色反应
OP
光度法
测定
Copper,5 Br PADAP,Colour Reaction,H 3BO 3 Na 2B 4O 7 Buffer,OP.
