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钢铁中的铅为有害元素之一,它以微小的球状形态存在于钢铁中,容易发生偏析现象,影响钢材质量。测定铅往往须预先以硫化物或硫酸盐形式从基体中分离出来,手续繁、周期长。并由于大量试剂的引入,使空白增加,而不能得到满意的结果。或双硫腙法则须引入氰化物及大量苯或四氯化碳,有碍分析人员健康和污染环境。本文利用铅(Ⅱ)离子在盐酸底液中有良好的可
Lead in steel is one of the harmful elements, and it exists in the steel in the form of tiny spherical particles, which tends to segregate and affect the quality of the steel. Determination of lead often have to be pre-sulfide or sulfate form separated from the matrix, complicated procedures, long cycle. And due to the introduction of a large number of reagents, the blank increase, but can not get satisfactory results. Or the dithizone rule requires the introduction of cyanide and large amounts of benzene or carbon tetrachloride, hinder the analysis of personnel health and environmental pollution. In this paper, the use of lead (Ⅱ) ions in hydrochloric acid at the end of a good solution