微波消解和氢化物发生ICP-AES法测定煤中痕量砷  

Determination of Trace Arsenic in Coal by Microwave Digestion and Hydride Generation ICP-AES

作　　者：刘晶[1] 郑楚光[1] 陆晓华[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《分析科学学报》2004年第1期23-25,共3页Journal of Analytical Science

基　　金：国家重点基础研究发展规划资助项目(G1999022212;2002CB211602)

摘　　要：建立了硝酸 盐酸 氢氟酸微波消解样品,氢化物发生ICP AES法测定煤中痕量砷的方法。考察了微波消解、酸性介质和硼氢化钠浓度的最佳条件。在选定的操作条件下,砷的检出限为0.3μg·L-1,相对标准偏差(n=5)小于4%。方法准确、快速,用本法测定国家标准参考物质的结果与推荐值一致。A method for the determination of trace As in coal by microwave digestion and hydride generation ICP-AES has been reported. The digestion system of HNO_(3)-HCl-HF was evaluated. The experimental conditions of microwave digestion, acidic media and the concentration of sodium tetrahydroborate were investigated. Testing results showed that the detection limit was 0.3 μg·L^(-1) and RSD(n=5) was below 4%. This method was simple and rapid. The treatment method was applicable for As and gave results that were in good agreement with the certified values of the standard reference material.

关 键 词：煤 砷 痕量分析 含量测定 微波消解 氢化物 ICP-AES 电感耦合等离子体原子发射光谱 

分 类 号：TQ533.1[化学工程—煤化学工程]