دورية أكاديمية
Dry-wet cycles increase pesticide residue release from soil
| العنوان: | Dry-wet cycles increase pesticide residue release from soil |
|---|---|
| المؤلفون: | Jablonowski, N.D., Linden, A., Köppchen, St., Thiele, B., Hofmann, D., Burauel, P. |
| المصدر: | Environmental toxicology and chemistry 31, 1941 - 1947 (2012). doi:10.1002/etc.1851 ; . |
| بيانات النشر: | SETAC [u.a.] |
| سنة النشر: | 2012 |
| المجموعة: | Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
| مصطلحات موضوعية: | info:eu-repo/classification/ddc/690, Pesticides, Persistence, Remobilization, Leaching, Risk assessment |
| جغرافية الموضوع: | DE |
| الوصف: | Soil drying and rewetting may alter the release and availability of aged pesticide residues in soils. A laboratory experiment was conducted to evaluate the influence of soil drying and wetting on the release of pesticide residues. Soil containing environmentally long-term aged (9-17 years) (14) C-labeled residues of the herbicides ethidimuron (ETD) and methabenzthiazuron (MBT) and the fungicide anilazine (ANI) showed a significantly higher release of (14) C activity in water extracts of previously dried soil compared to constantly moistened soil throughout all samples (ETD: p < 0.1, MBT and ANI: p < 0.01). The extracted (14) C activity accounted for 44% (ETD), 15% (MBT), and 20% (ANI) of total residual (14) C activity in the samples after 20 successive dry-wet cycles, in contrast to 15% (ETD), 5% (MBT), and 6% (ANI) in extracts of constantly moistened soils. In the dry-wet soils, the dissolved organic carbon (DOC) content correlated with the measured (14) C activity in the aqueous liquids and indicated a potential association of DOC with the pesticide molecules. Liquid chromatography MS/MS analyses of the water extracts of dry-wet soils revealed ETD and MBT in detectable amounts, accounting for 1.83 and 0.01%, respectively, of total applied water-extractable parent compound per soil layer. These findings demonstrate a potential remobilization of environmentally aged pesticide residue fractions from soils due to abiotic stresses such as wet-dry cycles. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/pmid/pmid:22782855; info:eu-repo/semantics/altIdentifier/issn/0730-7268; info:eu-repo/semantics/altIdentifier/wos/WOS:000307938500004; https://juser.fz-juelich.de/record/16336Test; https://juser.fz-juelich.de/search?p=id:%22PreJuSER-16336%22Test |
| الإتاحة: | https://doi.org/10.1002/etc.1851Test https://juser.fz-juelich.de/record/16336Test https://juser.fz-juelich.de/search?p=id:%22PreJuSER-16336%22Test |
| حقوق: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.5272A2A3 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |