摘要
本文研究了硫化物沉淀分离富集原子吸收法分析微量铋的方法。实验表明：在６２．８ｍｇ／ＬＳ￣（２－）和０．１４ｍｏｌ／ＬＨＮＯ＿３条件下，Ｂｉ￣（３＋）可与Ｓ￣（２－）形成难溶化合物而从溶液中定量分离富集出来，溶解后借助原子吸收法测定，可用于钢铁废水中铋的分析。方法对铋的最低分析浓度为０．０５ｍｇ／Ｌ加标回收率为９３．８％～１１０．０％，相对标准偏差为２．９％～４．３％
A method for the determhation of Bi byatomic absorption spectrometry after sulphideprecipitation separation and enrichment is re-ported, Under optimum conditions of 62.8mg/L S￣(2-) and 0.14 mol/L HNO_3, Bi￣(3+) reactswith S￣(2-) to form a precipitabel compound andcan be separated and enriched from the sola-tion. By atomic absorption spectrometry. themethod can be used for the determination of Biin waste water of steelworks, The limit of de-tection, the recovery and the relative standarddeviation are 0.05 mg/L, 93.8%～110.0%and 2.9%～4.3%respectivel
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第3期76-78,共3页
Chinese Journal of Analysis Laboratory
关键词
原子吸收
铋
废水
钢铁废水
硫化物沉淀
Bismuth determination
Sepa-ration and enrichment
atomic absorption spec-trometry
