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Trace determination of selenium in biological samples by CH4-Ar mixed gas plasma DRC-ICP-MS

文献类型：期刊论文

作者Guo, Wei1; Hu, Shenghong1; Wang, Yanxin1; Zhang, Luyuan3,4; Hu, Zhaochu2; Zhang, Jiangyi5
刊名MICROCHEMICAL JOURNAL
出版日期2013-05-01
卷号108页码:106-112
关键词Selenium Biological samples CH4-Ar mixed gas plasma DRC-ICP-MS
ISSN号0026-265X
DOI10.1016/j.microc.2012.10.006
文献子类Article
英文摘要Direct determination of ng g(-1) level of selenium by ICP-MS is complicated because of the presence of serious spectral interferences, and the high first ionization energy of Se (9.75 eV) also results in low analytical sensitivity. In this study, a reliable method for accurate determination of Se in biological samples using CH4-Ar mixed plasma-DRC-MS was evaluated. The predominant interfering Ar-40(2)+ (from ion source) on the most abundant Se-80 isotope was successfully eliminated by the charge transfer reaction using methane as DRC gas. The minor interferences of oxide or hydroxides ions (Zn-64 O-16(+), (NiO+)-Ni-64-O-16 and (CuOH+)-Cu-63-O-16) and double charged ions (Tb-159(2+), Dy-160,161(2+) and Gd-160(2+)) originating from sample matrix were decreased down to 50% using CH4-Ar mixed gas plasma instead of the conversional pure Ar-ICP. Meanwhile, the poor sensitivity of Se+ was improved by a factor of 3 due to the carbon-enhancement effect in CH4-Ar mixed gas plasma. In addition, to avoid the interference (BrH+)-Br-79 on Se-80(+), an elaborate evaporation procedure was used to remove the Br from the digestion solution. The proposed method was applied to direct determination of Se in fifty biologically related SRMs. Our results showed that the values of most SRMs were found to agree well with the certified or recommended values. This method has great potential for the determination of trace or trace level of Se in various biological samples. (c) 2012 Elsevier B.V. All rights reserved.
WOS关键词INDUCTIVELY-COUPLED PLASMA ; DYNAMIC-REACTION-CELL ; BANDPASS REACTION CELL ; MASS-SPECTROMETRY ; HYDRIDE-GENERATION ; ISOTOPE-DILUTION ; SENSITIVE DETERMINATION ; SPECIATION ANALYSIS ; ORGANIC-SOLVENTS ; FLOW-INJECTION
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000316427100018
出版者ELSEVIER SCIENCE BV
资助机构National Nature Science Foundation of China(21207120 ; National Nature Science Foundation of China(21207120 ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; 21175120 ; 21175120 ; 40973021) ; 40973021) ; National Nature Science Foundation of China(21207120 ; National Nature Science Foundation of China(21207120 ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; 21175120 ; 21175120 ; 40973021) ; 40973021) ; National Nature Science Foundation of China(21207120 ; National Nature Science Foundation of China(21207120 ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; 21175120 ; 21175120 ; 40973021) ; 40973021) ; National Nature Science Foundation of China(21207120 ; National Nature Science Foundation of China(21207120 ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; 21175120 ; 21175120 ; 40973021) ; 40973021)
源URL[http://ir.iggcas.ac.cn/handle/132A11/86942]  
专题中国科学院地质与地球物理研究所
通讯作者Guo, Wei
作者单位1.China Univ Geosci, Sch Environm Studies, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Xian AMS Ctr, Xian 710075, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Engn Geol & Water Resources Dept, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Wei,Hu, Shenghong,Wang, Yanxin,et al. Trace determination of selenium in biological samples by CH4-Ar mixed gas plasma DRC-ICP-MS[J]. MICROCHEMICAL JOURNAL,2013,108:106-112.
APA Guo, Wei,Hu, Shenghong,Wang, Yanxin,Zhang, Luyuan,Hu, Zhaochu,&Zhang, Jiangyi.(2013).Trace determination of selenium in biological samples by CH4-Ar mixed gas plasma DRC-ICP-MS.MICROCHEMICAL JOURNAL,108,106-112.
MLA Guo, Wei,et al."Trace determination of selenium in biological samples by CH4-Ar mixed gas plasma DRC-ICP-MS".MICROCHEMICAL JOURNAL 108(2013):106-112.

入库方式： OAI收割

来源：地质与地球物理研究所

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