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合成了4-(2-喹啉偶氮)-1.3—二羟基萘(2-QADNm),研究了其光度性质.在0.15mol/L NaOH溶液中,Cu~(2+)与2-QADNm形成1:2红色络合物,其摩尔吸光系数为6.4×10~4.提出的方法用于铝合金中铜的测定获得满意结果.
The photometric properties of 4- (2-quinolizolylazo) -1,3-dihydroxynaphthalene (2-QADNm) were studied. The formation of Cu 2+ and 2-QADNm in 0.15 mol / L NaOH solution 1: 2 red complex, the molar absorption coefficient of 6.4 × 10 ~ 4. The proposed method for the determination of copper in aluminum alloy to obtain satisfactory results.