Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.scitotenv.2015.05.045 |
| Title (Primary) | Stable carbon isotope fractionation during the biodegradation of lambda-cyhalothrin |
| Author | Shen, X.; Xu, Z.; Zhang, X.; Yang, F. |
| Source Titel | Science of the Total Environment |
| Year | 2015 |
| Department | WANA |
| Volume | 532 |
| Page From | 415 |
| Page To | 419 |
| Language | englisch |
| Keywords | Lambda-cyhalothrin; Biodegradation; Soil; Compound-specific stable isotope analysis; Carbon isotope fractionation |
| UFZ wide themes | RU2; |
| Abstract | In this study, the microbial degradation of lambda-cyhalothrin in soil was investigated using compound-specific stable isotope analysis. The results revealed that lambda-cyhalothrin was biodegraded in soil under laboratory conditions. The half-lives of lambda-cyhalothrin were determined to be 49 and 161 days in non-sterile and sterile soils spiked with 2 mg/kg lambda-cyhalothrin and 84 and 154 days in non-sterile and sterile soils spiked with 10 mg/kg lambda-cyhalothrin, respectively. The biodegradation of lambda-cyhalothrin resulted in carbon isotope fractionation, which shifted from − 29.0‰ to − 26.5‰ in soil spiked with 2 mg/kg lambda-cyhalothrin, and to − 27.5‰ with 10 mg/kg lambda-cyhalothrin. A relationship was established between the stable carbon isotope fraction and the residual concentrations of lambda-cyhalothrin by the Rayleigh equation in which the carbon isotope enrichment factor ε of the microbial degradation of lambda-cyhalothrin in the soil was calculated as − 2.53‰. This study provides an approach to quantitatively evaluate the biodegradation of lambda-cyhalothrin in soil in field studies. |
| Shen, X., Xu, Z., Zhang, X., Yang, F. (2015): Stable carbon isotope fractionation during the biodegradation of lambda-cyhalothrin Sci. Total Environ. 532 , 415 - 419 10.1016/j.scitotenv.2015.05.045 |
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