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采取强酸性阳离子交换树脂分离铜、磷,确定了交换分离的最佳条件,用ICP-AES测定,根据谱线强度大,信背比高的原则确定磷的最佳分析波长,当CCu/CP≤20时,磷的测定误差≤5.0%,满足了分析的要求,实验的相对标准偏差为2.17%—5.00%,相对误差为-9.1%—4.5%,表明该分析方法的精密度和准确度均较好。
The optimum conditions of exchange were determined by ICP-AES. The best analysis wavelength of phosphorus was determined according to the principle of large line intensity and high signal-to-background ratio. When CCu / CP ≤20, the determination error of phosphorus is less than or equal to 5.0%, which meets the requirement of analysis. The relative standard deviation of the experiment is 2.17% -5.00% and the relative error is -9.1% -4.5%, indicating the precision and accuracy of the analytical method Are better.