Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 30, Issue 4, Pages 618-627Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2010.10.012
Keywords
Compound-specific isotope analysis (CSIA); Gas and liquid chromatography; Isotope-ratio mass spectrometry (IRMS); Cavity ring-down spectroscopy (CRDS); Degradation pathway; Isotope fractionation; Kinetic isotope effect (KIE); Liquid chromatography; Multicollector inductively coupled plasma mass spectrometry (MC-ICPMS)
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The analysis of variations in stable isotope composition is becoming an essential approach for evaluating enzymatic and abiotic reactions of organic contaminants in soils and aquatic systems. Different, sometimes complementary analytical techniques are currently used and developed to determine stable isotope ratios in individual organic compounds. Anticipating an increasing demand for compound-specific isotope analysis, this survey compiles information for choosing the most promising analytical approach to an isotope-related problem. To this end, we review the principles of instrumentation for compound-specific isotope analysis and show how they can be exploited to assess contaminant transformation processes. Using chlorinated solvents and triazine herbicides as illustrative examples, we discuss how the isotope-sensitive techniques impact the investigation of stable-isotope fractionation in environmental chemistry and microbiology. (C) 2010 Elsevier Ltd. All rights reserved.
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