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拟定了用稀硝酸溶解试样后,在同一溶液中不经分离直接用石墨炉原子吸收光谱法测定钢铁中铅铋砷锑锡的分析方法。试验选择了诸元素的最佳测定条件,验证了铁基和酸度对回收率、分析精度等因素的影响,以及背景校正法。讨论了低合金钢中共存合金元素的允许量。采用了邻近非吸收线校正背景测定铅和锑;氘灯校正背景测定铋砷锡。此法简便、快速,已用于低合金钢Welton 60的剖析及宝钢生铁与本钢生铁的对比试验中铅铋砷锑锡的分析,基本满足工艺研究的要求。
A method for the determination of lead, bismuth, arsenic, antimony and tin in steel by graphite furnace atomic absorption spectrometry was developed after the sample was dissolved with dilute nitric acid without separation in the same solution. The optimum conditions for the determination of all the elements were selected. The effects of iron-based and acidity on the recoveries, analytical precision and other factors, as well as the background correction method, were verified. The amount of coexistence of alloying elements in low alloy steels is discussed. Adjacent non-absorption line calibration background was used for the determination of lead and antimony; deuterium lamp calibration background determination of bismuth arsenic and tin. This method is simple and fast, has been used for analysis of low-alloy steel Welton 60 and Baosteel pig iron and iron in the comparative test lead bismuth arsenic antimony tin analysis basically meet the requirements of process research.