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磷铜中磷的测定延用已久的方法为磷酸铵镁重量法。此法准确度高,可惜费时较长,不适用于快速分析。络合滴定法测定磷铜中磷,基本上也还是应用上述原理,但省去高温灼烧,改用EDTA滴定过量的镁。此法不足之处,即使用大量剧毒的氰化钾为掩蔽剂,甚感不便。本文根据前人的工作,试就下述原理进行磷铜中磷的测定,结果较为满意。
Determination of phosphorous phosphorus in copper has long been the method of gravimetric method. This method has high accuracy, but it takes a long time and is not suitable for rapid analysis. Complexometric titration of phosphorous phosphorus in the copper, basically still apply the above principle, but eliminating the need for high temperature burning, use EDTA titration excess magnesium. The inadequacies of this method, even with a large number of toxic potassium cyanide masking agent, very inconvenient. This article based on previous work, try the following principles phosphorus determination of phosphorus, the results are more satisfactory.