Compound-Specific Stable Isotope Analysis (CSIA) for Evaluating Degradation of Organic Pollutants: An Overview of Field Case Studies

Kuntze, Kevin; Eisenmann, Heinrich; Richnow, Hans‐Hermann; Fischer, Anko

doi:10.1007/978-3-319-50391-2_23

Cited by 14 publications

(9 citation statements)

References 305 publications

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“…Changes in compound-specific stable isotope values of organic compounds can be used to infer the extent of degradation. − In groundwater systems, solute concentrations are influenced by both (bio)chemical degradation and physical transport, namely advection, dispersion, diffusion, and interphase mass transfer. − While advection is the main mass transport process in the direction of the flow, dispersion, and diffusion cause spreading of the compounds due to the physical or chemical variability of the system. In contrast to concentrations, isotope ratios are thought to be little affected by hydrodynamic dispersion (including mechanical dispersion and diffusion) or diffusion because all isotopologues essentially undergo the same dilution. − If true, then changes in isotope values can serve as a particularly robust indicator of degradation that is little affected by these physical processes.…”

Section: Introductionmentioning

confidence: 99%

Magnitude of Diffusion- and Transverse Dispersion-Induced Isotope Fractionation of Organic Compounds in Aqueous Systems

Sun

Peters

Thullner

et al. 2021

Environ. Sci. Technol.

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Determining whether aqueous diffusion and dispersion lead to significant isotope fractionation is important for interpreting the isotope ratios of organic contaminants in groundwater. We performed diffusion experiments with modified Stokes diaphragm cells and transverse-dispersion experiments in quasi-two-dimensional flow-through sediment tank systems to explore isotope fractionation for benzene, toluene, ethylbenzene, 2,6-dichlorobenzamide, and metolachlor at natural isotopic abundance. We observed very small to negligible diffusion- and transverse-dispersion-induced isotope enrichment factors (ε < −0.4 ‰), with changes in carbon and nitrogen isotope values within ±0.5‰ and ±1‰, respectively. Isotope effects of diffusion did not show a clear correlation with isotopologue mass with calculated power-law exponents β close to zero (0.007 < β < 0.1). In comparison to ions, noble gases, and labeled compounds, three aspects stand out. (i) If a mass dependence is derived from collision theory, then isotopologue masses of polyatomic molecules would be affected by isotopes of multiple elements resulting in very small expected effects. (ii) However, collisions do not necessarily lead to translational movement but can excite molecular vibrations or rotations minimizing the mass dependence. (iii) Solute–solvent interactions like H-bonds can further minimize the effect of collisions. Modeling scenarios showed that an inadequate model choice, or erroneous choice of β, can greatly overestimate the isotope fractionation by diffusion and, consequently, transverse dispersion. In contrast, available data for chlorinated solvent and gasoline contaminants at natural isotopic abundance suggest that in field scenarios, a potential additional uncertainty from aqueous diffusion or dispersion would add to current instrumental uncertainties on carbon or nitrogen isotope values (±1‰) with an additional ±1‰ at most.

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Section: Introductionmentioning

confidence: 99%

Magnitude of Diffusion- and Transverse Dispersion-Induced Isotope Fractionation of Organic Compounds in Aqueous Systems

Sun

Peters

Thullner

et al. 2021

Environ. Sci. Technol.

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“…PAHs are one of the compounds that scientists are interested in determining source apportionment and finding the fate, with a well-discussed endmember of carbon isotope ratio (δ 13 C) [ 93 , 94 ]. Each compound from low (e.g., naphthene, acenaphthylene, acenaphthene, etc.)…”

Section: Highlighted Approach: Stable Isotope Analysismentioning

confidence: 99%

“…In a study by Meyer et al [ 109 ], for example, different fractionations of δ 13 C and δ 15 N in the reaction of atrazine to hydroxyatrazine were observed in two different species and discussed as connected to enzymes involved in the transformation pathway (AtzA vs. TrZN) (dual isotope slopes Δ (=δ 15 N/δ 13 C) for Chelatobacter heintzii (−0.65 (±0.08)) and Arthrobacter aurescens TC1 (−0.61 (±0.02)). Kuntze et al [ 93 ] also asserted that anaerobic biodegradation is distinguished from aerobic biodegradation and abiotic transformation in most organic pollutants from dozens of results using ME (multi elements)-CSIA. This is because the cleavage site that affects fractionation differs depending on environmental conditions.…”

Section: Applications Of Csia For Monitor Pesticide Pollution In Environments and Agricultural Productsmentioning

confidence: 99%

Application of Compound-Specific Isotope Analysis in Environmental Forensic and Strategic Management Avenue for Pesticide Residues

et al. 2021

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Unintended pesticide pollution in soil, crops, and adjacent environments has caused several issues for both pesticide users and consumers. For users, pesticides utilized should provide higher yield and lower persistence while considering both the environment and agricultural products. Most people are concerned that agricultural products expose humans to pesticides accumulating in vegetation. Thus, many countries have guidelines for assessing and managing pesticide pollution, for farming in diverse environments, as all life forms in soil are untargeted to these pesticides. The stable isotope approach has been a useful technique to find the source of organic matter in studies relating to aquatic ecology and environmental sciences since the 1980s. In this study, we discuss commonly used analytical methods using liquid and gas chromatography coupled with isotopic ratio mass spectrometry, as well as the advanced compound-specific isotope analysis (CSIA). CSIA applications are discussed for tracing organic pollutants and understanding chemical reactions (mechanisms) in natural environments. It shows great applicability for the issues on unintended pesticide pollution in several environments with the progress history of isotope application in agricultural and environmental studies. We also suggest future study directions based on the forensic applications of stable isotope analysis to trace pesticides in the environment and crops.

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“…In this context, compound-specific isotope analysis (CSIA) can directly evidence in situ biodegradation of CEs, and can be coupled to diversity data. In particular, CSIA can help to evaluate pollutant degradation with respect to non-degradative dissipative processes, including sorption or dilution (e.g., Carreón-Diazconti et al, 2009;Courbet et al, 2011;Hunkeler, 2016;Kaown et al, 2016;Kuntze et al, 2020;Thullner et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Chlorinated ethene biodegradation and associated bacterial taxa in multi-polluted groundwater: Insights from biomolecular markers and stable isotope analysis

Hellal

Joulian

Urien³

et al. 2021

Science of The Total Environment

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Compound-Specific Stable Isotope Analysis (CSIA) for Evaluating Degradation of Organic Pollutants: An Overview of Field Case Studies

Cited by 14 publications

References 305 publications

Magnitude of Diffusion- and Transverse Dispersion-Induced Isotope Fractionation of Organic Compounds in Aqueous Systems

Magnitude of Diffusion- and Transverse Dispersion-Induced Isotope Fractionation of Organic Compounds in Aqueous Systems

Application of Compound-Specific Isotope Analysis in Environmental Forensic and Strategic Management Avenue for Pesticide Residues

Chlorinated ethene biodegradation and associated bacterial taxa in multi-polluted groundwater: Insights from biomolecular markers and stable isotope analysis

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