【摘要】 研究了在非离子表面活性剂吐温－８０和乳化剂ＯＰ存在下，于ｐＨ８．５缓冲介质中，铜（Ⅱ）与铜试剂显色反应条件。结果表明：配合物的最大吸收波长为４５３ｎｍ，表观摩尔吸光系数为１．５４×１０４Ｌ·ｍｏｌ－１．ｃｍ－１，铜（Ⅱ）含量在０～７０μｇ／２５ｍｌ范围内符合比耳定律。该法与巯基棉富集分离相结合，应用于天然水及废水中微量铜的测定，结果满意。更多还原

【Abstract】 he optimum conditions of colour reaction of copperwith the reagent DDTC have been studied. A brown yellow complex is formed from Cu (Ⅱ) and DDTC in thepresenct of Tween-80 and enulgent OP at pH 8. 5. Thecomplex has an absorption maximum at 453 mm. The molar absorptivity is 1. 54×104 L·mol-1·cm-1. Beer’s lawis obeyed in the concentration range of 0-70μg/25ml ofCu(Ⅱ). Combined with the concentration of Cu (Ⅱ)byusing sulfhydrylc cotton, the proposed method has beenapplied to the determination of Cu(Ⅱ) in natural waterand waste water with satisfactory results.更多还原