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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。
In this paper, the sensitive color reaction of 5-Br-PADAP with copper in the presence of OP was studied. The results showed that copper complexed with 5-Br-PADAP in the borate-borax buffer at pH 9 showed an apparent molar absorptivity of 1.67 × 105 L · mol-1 · cm-1 at 550 nm. Beer’s law is obeyed at 0-8μg / 25mL of copper. For the determination of lead in trace copper, the results were satisfactory.