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空气中微量铅的测定,过去一直采用经典的化学分析方法——双硫腺法。此法费时多,要求化学药品纯度高,用量大,而且分析中多次使用有毒药品如氰化钾等,既污染环境,又对人体伤害较大。采用铅离子选择电极测定法可提高分析速度,又节约了大量化学药品,改善了实验条件。我们进行了一些有关方法的实验并对局印刷厂熔铅车间空气中的铅烟作了大量的测定,得到较为满意的结果,现将分析方法介绍如下。
Determination of trace lead in the air, the past has been using the classic chemical analysis method - the double-gland method. This method is more time-consuming, requiring high purity chemicals, dosage, and the analysis of multiple use of toxic drugs such as potassium cyanide, both pollute the environment, but also a greater human injury. The use of lead ion selective electrode assay can improve the speed of analysis, but also save a lot of chemicals, improve the experimental conditions. We conducted a number of experiments on the method and the printing plant in the lead-melting furnace lead-melting plant made a lot of measurements, get more satisfactory results, the analysis method is as follows.