Stable Isotope Fractionation of γ-Hexachlorocyclohexane (Lindane) during Reductive Dechlorination by Two Strains of Sulfate-Reducing Bacteria

Badea, Silviu-Laurentiu; Vogt, Carsten; Weber, Stefanie; Danet, Andrei Florin; Richnow, Hans H.

doi:10.1021/es801284m

Cited by 82 publications

(75 citation statements)

References 38 publications

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“…However, except for the identification of nitrate sources, it has so far not been used to examine diffuse pollution at the catchment scale. Similarly, although analytical methods for CSIA of different elements have been developed and applied for several pesticides and pesticide metabolites (Badea et al, 2009;Hartenbach et al, 2008;Meyer et al, 2008;Milosevic et al, 2013;Penning and Elsner, 2007;Reinnicke et al, 2011;Schreglmann et al, 2013), isotopes of pesticides have not yet been continuously monitored and analyzed in rivers.…”

Section: S R Lutz Et Al: Potential Use Of Csia In River Monitoringmentioning

confidence: 99%

“…The two-dimensional isotope analysis was implemented by simulating carbon and hydrogen isotopes because carbon represents the element with the most isotope data available for pesticides (e.g. Annable et al, 2007;Badea et al, 2009;Meyer et al, 2009;Penning et al, 2010), and the cleavage of chemical bonds in pesticide molecules with hydrogen atoms induces a significantly stronger isotope fractionation effect than, for example, with nitrogen atoms (Hartenbach et al, 2008;Penning et al, 2010).…”

Section: Simulation Of Isotope Fractionation Effectsmentioning

confidence: 99%

“…Vienna Pee Dee Belemnite (VPDB; R standard = 0.011237) and Vienna Standard Mean Ocean Water (VSMOW; R standard = 1.5575 × 10 −4 ), respectively. The δ 13 C-value at the source was fixed at −30 ‰, which corresponds to typical values for carbon isotopes in pesticides (Annable et al, 2007;Kawashima and Katayama, 2010;Badea et al, 2009). Since no typical source values were available for hydrogen isotopes in pesticides, a value of −100 ‰ was chosen, which is consistent with δ 2 H-values reported for other organic contaminants (Mancini et al, 2008;Wang et al, 2004).…”

Section: Simulation Of Isotope Fractionation Effectsmentioning

confidence: 99%

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A model-based assessment of the potential use of compound-specific stable isotope analysis in river monitoring of diffuse pesticide pollution

Lutz

Meerveld

Waterloo

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. Compound-specific stable isotope analysis (CSIA) has, in combination with model-assisted interpretation, proven to be a valuable approach to quantify the extent of organic contaminant degradation in groundwater systems. CSIA data may also provide insights into the origin and transformation of diffuse pollutants, such as pesticides and nitrate, at the catchment scale. While CSIA methods for pesticides have increasingly become available, they have not yet been deployed to interpret isotope data of pesticides in surface water. We applied a coupled subsurface-surface reactive transport model (HydroGeoSphere) at the hillslope scale to investigate the usefulness of CSIA in the assessment of pesticide degradation. We simulated the transport and transformation of a pesticide in a hypothetical but realistic twodimensional hillslope transect. The steady-state model results illustrate a strong increase of isotope ratios at the hillslope outlet, which resulted from degradation and long travel times through the hillslope during average hydrological conditions. In contrast, following an extreme rainfall event that induced overland flow, the simulated isotope ratios dropped to the values of soil water in the pesticide application area. These results suggest that CSIA can help to identify rainfallrunoff events that entail significant pesticide transport to the stream via surface runoff. Simulations with daily rainfall and evapotranspiration data and one pesticide application per year resulted in small seasonal variations of concentrations and isotope ratios at the hillslope outlet, which fell within the uncertainty range of current CSIA methods. This implies a good reliability of in-stream isotope data in the absence of transport via surface runoff or other fast transport routes, since the time of measurement appears to be of minor importance for the assessment of pesticide degradation. The analysis of simulated isotope ratios also allowed quantification of the contribution of two different reaction pathways (aerobic and anaerobic) to overall degradation, which gave further insight into the transport routes in the modelled system. The simulations supported the use of the commonly applied Rayleigh equation for the interpretation of CSIA data, since this led to an underestimation of the real extent of degradation of less than 12 % at the hillslope outlet. Overall, this study emphasizes the applicability and usefulness of CSIA in the assessment of diffuse river pollution, and represents a first step towards a theoretical framework for the interpretation of CSIA data in agricultural catchments.

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Section: S R Lutz Et Al: Potential Use Of Csia In River Monitoringmentioning

confidence: 99%

Section: Simulation Of Isotope Fractionation Effectsmentioning

confidence: 99%

Section: Simulation Of Isotope Fractionation Effectsmentioning

confidence: 99%

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A model-based assessment of the potential use of compound-specific stable isotope analysis in river monitoring of diffuse pesticide pollution

Lutz

Meerveld

Waterloo

et al. 2013

Hydrol. Earth Syst. Sci.

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“…Due to its toxicity, lindane has been prohibited in most countries, but it can still be detected in soils (Badea et al 2009) and rice (Yao et al 2007) because of its high persistence. In China, more than 2,150,000 t of lindane was used, hence the serious hazard of lindane pollution (Li et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of γ-hexachlorocyclohexane biodegradation by a nitrogen-fixing cyanobacterium, Anabaena azotica

Zhang

Jia

et al. 2011

J Appl Phycol

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Biodegradation of γ-hexachlorocyclohexane (lindane) by a nitrogen-fixing cyanobacterium isolated from Chinese paddy soils, Anabaena azotica 118, was investigated. Lindane with an initial concentration of 0.2 mg L −1 in the cultures had no negative effect on the chlorophyll a concentration of A. azotica after 5 d exposure. The tolerance of this cyanobacterium to lindane indicates that it has the potential to biodegrade lindane. The degradation experiments show that the percentage of lindane removal efficiency by A. azotica was 48.8% after 5 d, at an initial lindane concentration of 0.2 mg L −1 and initial A. azotica chlorophyll a concentration of 50 mg L −1 . The calculated half-life was 4.78 d. Elevated culture temperature, irradiation, and usage of nitrate as the nitrogen source in the cultures could increase the biodegradation efficiency of lindane. γ-Pentachlorocyclohexene was detected as a metabolite of lindane. The ability of A. azotica to biodegrade lindane has potential use in the bioremediation for this organochlorine pesticide.

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“…Trichloroethylene (TCE) was reductively dechlorinated to cis-l, 2-dichloroethylene (cDCE) by sulfate-reducing cultures enriched from a contaminated subsurface soil (Pavlostathis and Zhuang, 1991). Carbon isotope fractionation factors were determined with the dichloro elimination of g-hexachlorocyclohexane (g-HCH) by Desulfococcus multivorans DSM 2059 and Desulfovibrio gigas DSM 1382 (Badea et al, 2009). Extracts of Desulfomonile tiedjei cells dechlorinated 3, 5-dichlorobenzoate almost completely to 3-chlorobenzoate before the later metabolite was consumed (Deweerd and Suflita, 1990).…”

Section: Introductionmentioning

confidence: 99%

Dechlorination of p,p′-DDTs coupled with sulfate reduction by novel sulfate-reducing bacterium Clostridium sp. BXM

Bao

Wang

et al. 2012

Environmental Pollution

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a b s t r a c tA novel non-dsrAB (without dissimilatory sulfite reductase genes) sulfate-reducing bacterium (SRB) Clostridium sp. BXM was isolated from a paddy soil. Incubation experiments were then performed to investigate the formation of reduced sulfur compounds (RSC) by Clostridium sp. BXM, and RSC-induced dechlorination of p,p 0 -DDT in culture medium and soil solution. The RSCs produced were 5.8 mM and 4.5 mM in 28 mM sulfate amended medium and soil solution respectively after 28-day cultivation. The p,p 0 -DDT dechlorination ratios were 74% and 45.8% for 5.8 mM and 4.5 mM RSCs respectively at 6 h. The metabolites of p,p 0 -DDT found in the two reaction systems were identified as p,p 0 -DDD and p,p 0 -DDE. The dechlorination pathways of p,p 0 -DDT to p,p 0 -DDD and p,p 0 -DDE were proposed, based on mass balance and dechlorination time-courses. The results indicated that RSC-induced natural dechlorination may play an important role in the fate of organochlorines.Crown

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Stable Isotope Fractionation of γ-Hexachlorocyclohexane (Lindane) during Reductive Dechlorination by Two Strains of Sulfate-Reducing Bacteria

Cited by 82 publications

References 38 publications

A model-based assessment of the potential use of compound-specific stable isotope analysis in river monitoring of diffuse pesticide pollution

A model-based assessment of the potential use of compound-specific stable isotope analysis in river monitoring of diffuse pesticide pollution

Characteristics of γ-hexachlorocyclohexane biodegradation by a nitrogen-fixing cyanobacterium, Anabaena azotica

Dechlorination of p,p′-DDTs coupled with sulfate reduction by novel sulfate-reducing bacterium Clostridium sp. BXM

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