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基于Ｃｕ２＋对Ｈ３ＰＯ４－Ｍｎ（Ⅱ）—Ｔｗｅｅｎ２０—ＤＡｍＥＭ—Ｖ（Ｖ）显色体系干扰褪色作用，建立了一个测定微量铜的新方法。其检出限为４×１０－５ｇ·Ｌ－１，铜离子含量在４０～２００μｇ·Ｌ－１范围内与ｌｇ（Ａｏ／Ａ）成良好线性关系，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。
Based on the interfacial fading effect of Cu2 + on H3PO4-Mn (Ⅱ) -Tween20-DAmEM-V (V) system, a new method for the determination of trace copper was established. The detection limit was 4 × 10-5g · L-1, and the copper ion content was in a good linear relationship with lg (Ao / A) in the range of 40 ~ 200μg · L-1. The stability and selectivity of the system were good. Trace lead for the determination of trace copper, the results are satisfactory.