氢化物发生-四通道无色散原子荧光光谱法同时测定纯铜中的痕量砷锑硒碲  

Simultaneous determination of trace arsenic,antimony,selenium and tellurium in pure copper by hydride generation-four-channel non-dispersive atomic fluorescence spectrometry

作　　者：倪迎瑞[1,2] 李中玺[1,2] 李海涛[1,2] 秦靖[1,2] 张圣杰[1,2] 薛振宇[1,2] 张燕 

机构地区：[1]西北有色地质研究院,陕西西安710054 [2]陕西黄金集团西安秦金有限责任公司,陕西西安710054 [3]西安协力动力科技有限公司,陕西西安710119

出　　处：《冶金分析》2012年第9期26-29,共4页Metallurgical Analysis

基　　金：国家中小企业创新基金项目资助(No.10c26216113235)

摘　　要：采用硝酸溶样,在氨性介质中用氢氧化镧共沉淀As、Sb、Se和Te后与铜基体分离,用氢化物发生-四通道无色散原子荧光光谱法同时测定了纯铜中As、Sb、Se和Te。优化了四元素氢化物发生条件和四元素同时测定的最佳工作参数。结果表明,在最佳条件下,方法对As、Sb、Se和Te的检出限分别为0.04、0.05、0.04和0.03ng/mL;测定精密度(RSD)分别为0.97%、0.77%、0.57%和1.0%(对20ng/mL As、Sb和10ng/mL Se、Te混合标准溶液,n=7)。用所建立的方法对纯铜实际样品中的As、Sb、Se和Te进行了同时测定,测定结果与用国家标准方法测定所得结果之间无明显差异,相对标准偏差为7.0%,各元素的加标回收率为94%～105%。After samples were dissolved by nitric acid, lanthanum hydroxide was used to co-precipitate As, Sb, Se, and Te for separation with copper substrate in ammonia medium,and As, Sb, Se, and Te in pure copper were simultaneously determined by hydride generation-four-channel non-dispersive a- tomic fluorescence spectrometry. Hydride generation conditions and operation parameters for simulta- neous determination of four elements were optimized. The results showed that, under optimal condi- tions, the detection limit of As, Sb, Se and Te were 0.04, 0.05, 0.04 and 0.03 ng/mL respectively, and relative standard deviation （RSD, n=7） were 0.97%, 0.77%, 0.57 % and 1.0% respectively for 20 ng/mL As, Sb and 10 ng/mL Se, Te mixed standard solution. This method was applied to simul- taneous determination of As, Sb, Se, and Te in actual samples. The determination results had no sig- nificant difference with those obtained by national standard method, and the relative standard devia- tion was 7.0% with recoveries of 94%-105%.

关 键 词：氢化物发生 四通道无色散原子荧光光谱法 砷 锑 硒 碲 纯铜 

分 类 号：O657.31[理学—分析化学]