【摘要】 本文研究了以５－Ｂｒ－ｐＡＤＡＰ作显色剂，利用三阶导数光谱法，在碱性介质中同时测定铜和锌。该法测得铜、锌的表观三阶导数摩尔吸光系数分别为１．０×１０￣５和３．０×１０￣５，同时解决了谱带相互重叠干扰的问题。对石油化工厂污水进行测定，得到满意结果。更多还原

【Abstract】 n this paper,the simultaneous determina-tion of zinc andcopper with 5-Br-PADAPatpH 8.5 by using derivative spectrophotometryhas been studied.Themolar derivative ab-sorption coefficients of zinc and copper are 3.0×10￣5 and 1.O×10￣5L/mol/cm derivative ab-sorption coefficients of averlapped spectra havebeen overcome,Satisfactory results were ab-tainedin the determination of zinc and copperin waste water in chemical petroleum plant更多还原