摘要
采用硝酸、氢氟酸、硫酸低温溶解样品,用硫脲、抗坏血酸对溶液预还原,用硼氢化钾将砷还原为AsH3,原子化后测定其荧光强度,以标准曲线法计算砷的含量。进行条件优化试验,和银精矿中砷的精密度试验、标准回收试验,结果表明本方法在测定范围为As:0.010%~0.40%可行。
Samples were dissolved in nitric acid,hydrofluoric acid and sulfuric acid at low temperature,and the solution was pre-reduced with thiourea and ascorbic acid,and arsenic was reduced to AsH3 by potassium borohydride.Conditions optimization test,precision test and standard recovery test of arsenic in silver concentrate show that the method is feasible in the determination range of As:0.010%~0.40%.
作者
刘晓燕
罗江波
LIU Xiao-yan;LUO Jiang-bo(Inspection and testing center,Daye nonferrous design and Research Institute,Huangshi,Hubei,Huangshi 435002,China;Hubei Huangshi product quality supervision and Inspection Institute,Huangshi 435000,China)
出处
《世界有色金属》
2018年第18期151-151,153,共2页
World Nonferrous Metals
关键词
氢化物发生-原子荧光光谱法
银精矿
砷
hydride generation atomic fluorescence spectrometry
silver concentrate
arsenic
作者简介
刘晓燕,女,生于1987年,硕士,工程师,研究方向:主要从事岩石矿物分析测试。
