微波消解和氢化物发生——电感耦合等离子体发射光谱法测定煤中痕量硒  

Determination of Trace Selenium in Coal By Microwave Digestion and Hydride Generation ICP-AES

作　　者：刘晶[1] 郑楚光[1] 张军营[1] 徐杰英[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《光谱学与光谱分析》2004年第3期351-353,共3页Spectroscopy and Spectral Analysis

基　　金：国家重点基础研究发展规划(G1 9990 2 2 2 1 2 ;2 0 0 2CB2 1 1 60 2 )资助项目

摘　　要：基于微波消解和氢化物发生电感耦合等离子体发射光谱法 ,实现了对煤中痕量硒的测定。采用硝酸 盐酸 氢氟酸消解体系 ,氢化物发生在 3mol·L-1盐酸介质中进行 ,以硼氢化钠为还原剂 ,浓度为 1%。考察了微波消解条件、预还原条件和干扰的影响。方法准确、快速 ,用该法测定国家标准参考物质的结果与推荐值一致 ,并与艾氏剂灼烧法测定结果一致。硒的检出限为 0 3μg·L-1,RSD小于 5 %。A method for determining trace Se in coal by microwave digestion and hydride generation ICP-AES is,reported. The digestion system of HNO3-HCl-HF was evaluated. The hydride generation occurred in 3 mol(.)L(-1) hydrochloric acid media with 1% sodium tetrahydroborate as a reduction reagent. The experimental conditions of microwave digestion, prereduction, and interferences were investigated. This method is simple and rapid. The treatment method was applicable to Se and gave results that were in good agreement with the certified values of the standard reference material. Testing results showed that the detection limit was 0.3 mug(.)L(-1) and RSD was below 5%.

关 键 词：微波消解 氢化物发生 电感耦合等离子体发射光谱法 煤 硒 痕量分析 含量测定 

分 类 号：TQ533.6[化学工程—煤化学工程]