Ultra trace determination of fluorobenzoic acids in reservoir and ground water using isotope dilution gas chromatography mass spectrometry

被引:7
作者
Mueller, Karsten [1 ]
Seubert, Andreas [1 ]
机构
[1] Univ Marburg, Dept Chem, Marburg, Germany
关键词
spikes; isotope dilution gas chromatography mass spectrometry; hydrogen-2; fluorobenzoic acids; isotopic labelling; H/D-exchange; stable isotope tracer techniques; trace analysis; analytical methods; SOLID-PHASE EXTRACTION; AROMATIC CARBOXYLIC-ACIDS; PERFORMANCE LIQUID-CHROMATOGRAPHY; NONREACTIVE TRACERS; ION CHROMATOGRAPHY; SOIL; FLUIDS; COMBINATION; SEPARATION; SAMPLES;
D O I
10.1080/10256016.2014.891995
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The accurate ultra-trace analysis of six fluorobenzoic acids (FBAs) via isotope dilution gas chromatography mass spectrometry through their deuterated analogues is described. North Sea reservoir and ground water samples were spiked with six deuterated FBAs (dFBAs), enriched using solid-phase extraction (SPE) and analysed using GC/MS after derivatisation with BF (3)center dot MeOH. All FBAs were enriched and determined simultaneously. SPE allowed a 250-fold enrichment of the acids if 100mL of sample volume was used. The method enables the determination of FBAs down to the range of 8-37ng L (-1) with recoveries between 66 % and 85 %. It uses low amounts of chemicals and is adaptable to larger and smaller sample volumes.
引用
收藏
页码:277 / 284
页数:8
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