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Titel (primär) Influence of mass transfer on stable isotope fractionation
Autor Thullner, M.; Fischer, A.; Richnow, H.-H.; Wick, L.Y.;
Journal / Serie Applied Microbiology and Biotechnology
Erscheinungsjahr 2013
Department ISOBIO; UMB;
Band/Volume 97
Heft 2
Sprache englisch;
POF III (gesamt) T41;
Keywords Bioavailability; Compound-specific stable isotope analysis; CSIA; Biodegradation; Groundwater contamination
UFZ Querschnittsthemen ru3
Abstract Biodegradation of contaminants is a common remediation strategy for subsurface environments. To monitor the success of such remediation means a quantitative assessment of biodegradation at the field scale is required. Nevertheless, the reliable quantification of the in situ biodegradation process it is still a major challenge. Compound-specific stable isotope analysis has become an established method for the qualitative analysis of biodegradation in the field and this method is also proposed for a quantitative analysis. However, to use stable isotope data to obtain quantitative information on in situ biodegradation requires among others knowledge on the influence of mass transfer processes on the observed stable isotope fractionation. This paper reviews recent findings on the influence of mass transfer processes on stable isotope fractionation and on the quantitative interpretation of isotope data. Focus will be given on small-scale mass transfer processes controlling the bioavailability of contaminants. Such bioavailability limitations are known to affect the biodegradation rate and have recently been shown to affect stable isotope fractionation, too. Theoretical as well as experimental studies addressing the link between bioavailability and stable isotope fractionation are reviewed and the implications for assessing biodegradation in the field are discussed.

ID 13139
dauerhafte UFZ-Verlinkung http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=13139
Thullner, M., Fischer, A., Richnow, H.-H., Wick, L.Y. (2013):
Influence of mass transfer on stable isotope fractionation
Appl. Microbiol. Biotechnol. 97 (2), 441 - 452