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Environ Pollut

Title:		Fractionation in position-specific isotope composition during vaporization of environmental pollutants measured with isotope ratio monitoring by (1)(3)C nuclear magnetic resonance spectrometry
Author(s):		Julien M; Parinet J; Nun P; Bayle K; Hohener P; Robins RJ; Remaud GS;
Address:		"EBSI Team, CEISAM, University of Nantes-CNRS UMR 6230, 2 rue de la Houssiniere BP 92208, F-44322 Nantes, France. University of Aix-Marseille-CNRS, Laboratoire Chimie Environnement FRE 3416, Place Victor Hugo 3, 13331 Marseille, France. EBSI Team, CEISAM, University of Nantes-CNRS UMR 6230, 2 rue de la Houssiniere BP 92208, F-44322 Nantes, France. Electronic address: gerald.remaud@univ-nantes.fr"
Journal Title:		Environ Pollut
Year:		2015
Volume:		20150626
Issue:
Page Number:		299 - 306
DOI:		10.1016/j.envpol.2015.05.047
ISSN/ISBN:		1873-6424 (Electronic) 0269-7491 (Linking)
Abstract:		"Isotopic fractionation of pollutants in terrestrial or aqueous environments is a well-recognized means by which to track different processes during remediation. As a complement to the common practice of measuring the change in isotope ratio for the whole molecule using isotope ratio monitoring by mass spectrometry (irm-MS), position-specific isotope analysis (PSIA) can provide further information that can be exploited to investigate source and remediation of soil and water pollutants. Position-specific fractionation originates from either degradative or partitioning processes. We show that isotope ratio monitoring by (13)C NMR (irm-(13)C NMR) spectrometry can be effectively applied to methyl tert-butylether, toluene, ethanol and trichloroethene to obtain this position-specific data for partitioning. It is found that each compound exhibits characteristic position-specific isotope fractionation patterns, and that these are modulated by the type of evaporative process occurring. Such data should help refine models of how remediation is taking place, hence back-tracking to identify pollutant sources"
Keywords:		Carbon Isotopes/analysis Chemical Fractionation/instrumentation/*methods Environmental Monitoring/*methods Environmental Pollutants/*analysis Ethanol/analysis *Magnetic Resonance Spectroscopy/instrumentation Methyl Ethers/analysis Toluene/analysis Trichlo;
Notes:		"MedlineJulien, Maxime Parinet, Julien Nun, Pierrick Bayle, Kevin Hohener, Patrick Robins, Richard J Remaud, Gerald S eng Research Support, Non-U.S. Gov't England 2015/07/01 Environ Pollut. 2015 Oct; 205:299-306. doi: 10.1016/j.envpol.2015.05.047. Epub 2015 Jun 26"