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王水分解后的铜精矿试液中，Ａｕ（Ⅲ）与Ｃｌ－形成稳定的络阴离子。选定顶杯式小型阴离子交换柱，在６０～８０目２０１×７阴离子交换树脂上富集Ａｕ的络阴离子，树脂经灰化处理后用原子吸收光谱仪测定Ａｕ。经标样分析验证，结果与标准值相符。对于ｗ（Ａｕ）在１０－６水平的试样，７次测定的相对标准偏差为１．５％～２．２％。
In the test solution of copper concentrate after the decomposition of aqua regia, Au (Ⅲ) forms a stable complex anion with Cl-. Selected small cup anion exchange column, 60 ~ 80 mesh 201 × 7 anion exchange resin enrichment of Au anions, the resin after ashing treatment with atomic absorption spectrometry Au. After the standard sample verification, the result is consistent with the standard value. For w (Au) at 10-6 levels, the relative standard deviations of the seven determinations ranged from 1.5% to 2.2%.