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Reduction of acid effects on trace element determination in food samples by CH4 mixed plasma-DRC-MS

文献类型：期刊论文

作者Guo, Wei1; Hu, Shenghong1; Zhang, Jiangyi2; Hu, Zhaochu1; Zhang, Hongfei1; Wang, Yanxin1
刊名TALANTA
出版日期2012-03-15
卷号91页码:60-64
关键词Acid effects Trace elements Food samples CH4-Ar mixed plasma-DRC-MS
ISSN号0039-9140
DOI10.1016/j.talanta.2012.01.011
文献子类Article
英文摘要A robust method for trace element determination in food samples by addition of methane to the plasma of a dynamic reaction cell mass spectrometer (CH4 mixed plasma-DRC-MS) was developed. Addition of 3 mL min(-1) methane to Ar-plasma eliminates the signal suppressions of various elements (As, Se, Hg, etc.) due to the high concentration of nitric acid (10%, v/v). The CH4-Ar mixed plasma may compensate for the plasma cooling effects due to the highly concentrated nitric acid. The interfering polyatomic ions (ArC+)-Ar-40-C-12, (ArCl+)-Ar-40-Cl-35 and (ArAr+)-Ar-40-Ar-40 on Cr-52(+), As-75(+) and Se-80(+) determination were removed effectively using the DRC with CH4 as the reaction gas. The limits of quantification (LOQ 10 sigma) were 0.35 ng g(-1), 0.07 ng g(-1), 0.35 ng g(-1), 0.07 ng g(-1), 0.15 ng g(-1), and 0.07 ng g(-1) for As, Cd, Cr, Hg, Pb and Se, respectively. The proposed method was applied to the determination of these trace elements in four food standard reference materials (NIST1577b, GBW10018, NIST1570a and GBW10016), and the results were in good agreement with the certified values. (C) 2012 Elsevier B.V. All rights reserved.
WOS关键词ATOMIC EMISSION-SPECTROMETRY ; NEBULIZER GAS-FLOW ; ICP-MS ; MASS-SPECTROMETRY ; NITRIC-ACID ; MICROWAVE DIGESTION ; BIOLOGICAL SAMPLES ; INTERFERENCES ; ELIMINATION ; MERCURY
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000301811900009
出版者ELSEVIER SCIENCE BV
资助机构National Nature Science Foundation of China(21175120 ; National Nature Science Foundation of China(21175120 ; 40973021) ; 40973021) ; National Nature Science Foundation of China(21175120 ; National Nature Science Foundation of China(21175120 ; 40973021) ; 40973021) ; National Nature Science Foundation of China(21175120 ; National Nature Science Foundation of China(21175120 ; 40973021) ; 40973021) ; National Nature Science Foundation of China(21175120 ; National Nature Science Foundation of China(21175120 ; 40973021) ; 40973021)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84632]  
专题中国科学院地质与地球物理研究所
通讯作者Hu, Shenghong
作者单位1.China Univ Geosci, Fac Earth Sci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Engn Geomech, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Wei,Hu, Shenghong,Zhang, Jiangyi,et al. Reduction of acid effects on trace element determination in food samples by CH4 mixed plasma-DRC-MS[J]. TALANTA,2012,91:60-64.
APA Guo, Wei,Hu, Shenghong,Zhang, Jiangyi,Hu, Zhaochu,Zhang, Hongfei,&Wang, Yanxin.(2012).Reduction of acid effects on trace element determination in food samples by CH4 mixed plasma-DRC-MS.TALANTA,91,60-64.
MLA Guo, Wei,et al."Reduction of acid effects on trace element determination in food samples by CH4 mixed plasma-DRC-MS".TALANTA 91(2012):60-64.

入库方式： OAI收割

来源：地质与地球物理研究所

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