作者: Maik A. Jochmann , Torsten C. Schmidt
DOI: 10.1007/978-3-540-72641-8_1
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摘要: Fuel oxygenates such as methyl tert-butyl ether (MTBE), ethyl (ETBE) and tert-amyl (TAME) today are among the most frequently detected volatile organic compounds in groundwater and, thus, they have become priority pollutants over last decade. Thus, their quantitative determination at very low concentrations is routinely required. Methods for this purpose compound-specific isotope analysis (CSIA), especially of MTBE its key degradation intermediate alcohol (TBA) ground surface water reviewed work. For determination, fuel almost exclusively analyzed by gas chromatography, mainly with mass spectrometric detection due to selectivity sensitivity requirements. Sample introduction/enrichment based on membrane introduction spectrometry, direct aqueous injection, headspace analysis, purge trap, solid-phase microextraction (direct immersion or headspace) other approaches solid phase dynamic extraction liquid-phase discussed. Furthermore, use ion mobility spectrometry related reviewed. Specific advantages disadvantages these techniques compared criteria choice an appropriate method given. The application CSIA nowadays can be used determine isotopic composition μgL–1 range thus will invaluable tool characterization environmental fate pollutants. Therefore, overview analytical aspects technique included here.