Publication Details |
Reference Category | Journals |
DOI / URL | link |
Title (Primary) | Quantification of organic pollutant degradation in contaminated aquifers using compound specific stable isotope analysis – Review of recent developments |
Author | Thullner, M.; Centler, F.; Richnow, H.-H.; Fischer, A. |
Journal | Organic Geochemistry |
Year | 2012 |
Department | ISOBIO; UMB |
Volume | 42 |
Issue | 12 |
Page From | 1440 |
Page To | 1460 |
Language | englisch |
Abstract | Compound specific stable isotope analysis (CSIA) has been
established as a viable tool for proving, characterizing and assessing
degradation of organic pollutants within contaminated aquifers. The
fractionation of stable isotopes during contaminant degradation leads to
observable shifts in stable isotope ratios which can serve as an
indicator for in situ pollutant degradation and allow for a quantitative
assessment by means of the so-called Rayleigh (distillation) equation. This review highlights the recent developments of the Rayleigh equation approach for quantifying in situ degradation of organic pollutants in contaminated aquifers. The advantages and limitations of the Rayleigh equation approach are discussed and suggestions for improvements are given. Concepts are provided to estimate the uncertainty due to errors or variability of input parameters and how to deal with such uncertainty. Moreover, the applicability of the Rayleigh equation approach is evaluated regarding the heterogeneity and complexity of groundwater systems. For such systems, the review discusses the relevance of non-destructive processes, which affect the concentration (e.g., dispersive mixing) and potentially also the stable isotope ratio of contaminants (e.g., sorption, volatilization), and the resulting implications for the Rayleigh equation approach. |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11940 |
Thullner, M., Centler, F., Richnow, H.-H., Fischer, A. (2012): Quantification of organic pollutant degradation in contaminated aquifers using compound specific stable isotope analysis – Review of recent developments Org. Geochem. 42 (12), 1440 - 1460 |