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Bernstein, A.* ; Ronen, Z.* ; Adar, E.* ; Nativ, R.* ; Lowag, H. ; Stichler, W. ; Meckenstock, R.U.

Compound-specific Isotope analysis of RDX and stable isotope fractionation during aerobic and anaerobic Bbiodegradation.

Environ. Sci. Technol. 42, 7772-7771 (2008)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a common contaminant at explosives production sites. Here, we report on the use of compound-specific isotope analysis of RDX to obtain ?15N and ?18O enrichment factors during biodegradation in batch cultures. A new preparation method has been developed based on RDX purification using thin-layer chromatography. RDX is then subjected to an elemental analyzer coupled with an isotope-ratio mass spectrometer (EA-IRMS). The precision of the method shows standard deviations of 0.13‰ and 1.18‰ for ?15N and ?18O, respectively, whereas the accuracy of the method has been checked routinely, adhering to external standards. The method was applied to RDX samples subjected to biodegradation under aerobic or anaerobic conditions. Enrichment factors under aerobic conditions were -2.1‰ and -1.7‰ for ?15N and ?18O, respectively, and under anaerobic conditions, -5.0‰ and -5.3‰ for ?15N and ?18O, respectively. The results of this study provide a tool for monitoring natural attenuation of RDX in a contaminated environment.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 2008
HGF-Berichtsjahr 2008
ISSN (print) / ISBN 0013-936X
e-ISSN 1520-5851
Quellenangaben Band: 42, Heft: 21, Seiten: 7772-7771 Artikelnummer: , Supplement: ,
Verlag American Chemical Society (ACS)
Verlagsort Washington, DC
Begutachtungsstatus Peer reviewed
POF Topic(s) 20403 - Sustainable Water Management
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-504300-004
Scopus ID 55349095420
Erfassungsdatum 2008-11-24