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Title (Primary) Carbon and hydrogen isotope analysis of parathion for characterizing its natural attenuation by hydrolysis at a contaminated site
Author Wu, L.; Verma, D.; Bondgaard, M.; Melvej, A.; Vogt, C.; Subudhi, S.; Richnow, H.H.;
Journal Water Research
Year 2018
Department ISOBIO;
Volume 143
Language englisch;
POF III (all) T41;
Keywords Isotope fractionation; Parathion; In situ hydrolysis; Field application; CSIA
Abstract The applicability of compound-specific isotope analysis (CSIA) for assessing in situ hydrolysis of parathion was investigated in a contaminated aquifer at a former pesticide wastes landfill site. Stable isotope analysis of parathion extracted from groundwater taken from different monitoring wells revealed a maximum enrichment in carbon isotope ratio of +4.9‰ compared to the source of parathion, providing evidence that in situ hydrolysis took place. Calculations based on the Rayleigh-equation approach indicated that the natural attenuation of parathion was up to 8.6% by hydrolysis under neutral and acidic conditions. In degradation experiments with aerobic and anaerobic parathion-degrading microbes, no carbon and hydrogen isotope fractionation of parathion were observed. For the first time, CSIA has been applied for the exclusive assessment of the hydrolysis of phosphorothioate-containing organophosphorus pesticides at a contaminated field site.
ID 20630
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=20630
Wu, L., Verma, D., Bondgaard, M., Melvej, A., Vogt, C., Subudhi, S., Richnow, H.H. (2018):
Carbon and hydrogen isotope analysis of parathion for characterizing its natural attenuation by hydrolysis at a contaminated site
Water Res. 143 , 146 - 154