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根据Ｃｕ２＋对高锰酸钾氧化二安替比林对乙氧基苯基甲烷（ＤＡｐＥＭ）显色的干扰褪色作用，建立了一个测铜的新方法．其检出限为２×１０－６ｇ／Ｌ，铜离子的含量在１０－８０μｇ／Ｌ内与１ｇ（Ａ０／Ａ）成良好的线性关系，体系稳定性和选择性良好．用于铅样中痕量铜的测定，结果满意．
According to the interference fading effect of Cu2 + on the oxidation of diantipyrylmethacrylate (DApEM) by potassium permanganate, a new method for the determination of copper was established. The detection limit is 2 × 10-6g / L, the content of copper ions is 10 ~ 80μg / L and 1g (A0 / A) into a good linear relationship, the stability and selectivity of the system is good. Trace lead for the determination of trace copper, the results are satisfactory.