乙醇基体改进ICP-MS法直接测定植物中的痕量As、Se、Sb和Te  

Direct determination of As、 Se、 Sb and Te in plants by inductively coupled plasma mass spectrometry using ethanol as a matrix modifiers

作　　者：李艳香[1] 梁婷[2] 汤行[1] 刘先国[1] 胡兆初[2] 胡圣虹[1] 

机构地区：[1]中国地质大学(武汉)生物地质与环境地质教育部重点实验室,武汉430074 [2]中国地质大学(武汉)地质过程与矿产资源国家重点实验室,武汉430074

出　　处：《分析试验室》2010年第5期29-32,共4页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(20575061)项目资助

摘　　要：建立了HNO3-H2O2高压密闭消解、2%乙醇基体改进电感耦合等离子体质谱法(ICP-MS)测定植物中As、Se、Sb和Te的新方法。探讨了乙醇基体对As、Se、Sb和Te信号的增敏效应,以2%乙醇作基体改进剂,各元素信号增敏因子在2~6之间。方法的检出限(3σ)分别为0.0450、2.49、0.0892、0.0202μg/L,相对标准偏差均小于3.6%。A rapid and simple method for the determination of trace elements As,Se,Sb and Te in plants by inductively coupled plasma mass spectrometry(ICP-MS) using ethanol as a matrix modifier has been developed.The plant samples were digested in closed vessels with a HNO3-H2O2 mixed solvent.The matrix effects of ethanol on signal intensities of As,Se,Sb and Te were investigated.The sensitivities of analytes were significantly enhanced by adding 2% ethanol,and the enhancement factors were in the range of 2～6.The dete...

关 键 词：电感耦合等离子体质谱 植物 乙醇 砷 锑 硒 碲 

分 类 号：Q946-3[生物学—植物学]