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本文采用原子吸收分光光度法直接测定金属锑锭中的痕量铜、铁和铅。由于喷雾溶液的含盐量很高,酸度较大,为了获得较好的检测限和准确度,我们介绍采用非连续雾化样品的方法来克服高盐量溶液连续喷雾对燃烧器头的堵塞现象;对于高盐量引起的基体干扰,采用背景校正技术加以克服;锑盐的水解用加入酒石酸防止。本法样品的测定数据与化学法、标准加入法对照,十分吻合。 一、试剂仪器及工作条件 所有化学试剂均为分析纯。背景校正和干扰研究用的基体溶液以高纯锑粉(99.995％)制备;铜、铁和铅标准溶液为含4％酒石酸的10％盐酸溶液。
In this paper, direct determination of trace amounts of copper, iron and lead in metal antimony ingots by atomic absorption spectrophotometry. Due to the high salinity and high acidity of the spray solution, in order to obtain better detection limit and accuracy, we introduce a method of using non-continuous atomized sample to overcome the clogging of the burner head caused by continuous spray of high-salt solution ; For high salt caused by matrix interference, using background correction technology to be overcome; antimony salt hydrolysis with tartaric acid to prevent. The determination of the sample data with the chemical method, the standard accession method is very consistent. First, the reagent equipment and working conditions All chemical reagents are of analytical grade. The base solution for background correction and interference studies was prepared with high pure antimony powder (99.995%); the standard solutions of copper, iron and lead were 10% hydrochloric acid with 4% tartaric acid.