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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Dousset, Sylvie Schmitt-Kopplin, Philippe Thevenot, Mathieu Hertkorn, Norbert Andreux, Francis |
| Description | Country affiliation: France Author Affiliation: Thevenot M ( UMR 7618 INRA-CNRS-Université, Laboratoire de Biogéochimie et Ecologie des Milieux Continentaux, Centre INRA Versailles Grignon, Thiverval-Grignon, France. Mathieu.Thevenot@grignon.inra.fr) |
| Abstract | Diuron is frequently detected in some drinking water reservoirs under the Burgundy vineyards, where organic amendments are applied. The environmental effect of these amendments on pesticide transport is ambiguous: on the one hand it could enhance their retention by increasing soil organic carbon content; on the other hand, dissolved organic matter (DOM) could facilitate their transport. Elutions were performed using columns packed with glass beads in order to investigate DOM-diuron interactions, and the possible co-transport of diuron and DOM. Four organic amendments (A, B, C and D) were tested; C and D were sampled at fresh (F) and mature (M) stages. An increase in diuron leaching was observed only for A and D(F) amendments (up to 16% compared to the DOM-free blank samples), suggesting a DOM effect on diuron transport. These results could be explained by the higher DOM leaching for A and D(F) compared to B, C(F), C(M) and D(M) increasing diuron-DOM interactions. These interactions seem to be related to the aromatic and aliphatic content of the DOM, determining formation of hydrogen and non-covalent bonds. The degree of organic matter maturity does not seem to have any effect with amendment C, while a reduction in diuron leaching is observed between D(F) and D(M). After equilibrium dialysis measurement of diuron-DOM complexes, it appeared that less than 3% of the diuron applied corresponded to complexes with a molecular weight >1000 Da. Complexes <1000 Da could also take part in this facilitated transport. |
| ISSN | 00489697 |
| Issue Number | 14 |
| Journal | Science of The Total Environment |
| Volume Number | 407 |
| e-ISSN | 18791026 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2009-07-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Diuron Chemistry Herbicides Water Pollutants, Chemical Magnetic Resonance Spectroscopy Organic Chemicals Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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