Speciation analysis for mercury in gas condensates by capillary gas chromatography with inductively coupled plasma mass spectrometric detection

被引:38
作者
Bouyssiere, B
Baco, F
Savary, L
Lobiñski, R
机构
[1] CNRS, UMR 5034, F-64053 Pau 9, France
[2] Inst Francais Petr, CEDI Rene Navarre, Vernaison, France
[3] Inst Francais Petr, F-92506 Rueil Malmaison, France
关键词
gas condensates; mercury; organomercury compounds; metals;
D O I
10.1016/S0021-9673(02)01151-2
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A method allowing species-selective determination of atomic mercury, non-polar dialkylated mercury compounds, polar monoalkylated species and inorganic mercury complexes in natural gas condensates was developed. Inductively coupled plasma mass spectrometry was employed as a detection method for capillary gas chromatography and compared with microwave induced plasma atomic emission detection for the analysis of hydrocarbon-rich matrices. The method was based on two consecutive injections allowing comprehensive speciation analysis. First a sample aliquot was diluted with toluene and analysed for Hg-0 and individual dialkylmercury compounds. Then, another aliquot was butylated with a Grignard reagent for the species specific determination of Hg(II) and monoalkylated mercury species. The detection limits were down to 0.08 pg level. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:431 / 439
页数:9
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