Journal
CHEMOSPHERE
Volume 89, Issue 11, Pages 1267-1271Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2012.05.018
Keywords
Humic substances; Carbofuran; 3-Hydroxy-carbofuran; 3-Keto-carbofuran; Pesticides; Hydrolysis
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Funding
- Xunta de Galicia [10PXIB383187PR]
- Excma. Diputacion Provincial de Ourense (INOU) [K125131H6 4702]
- University of Vigo
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The influence of humic aggregates in water solution upon the chemical stability of carbofuran (CF) and the carbofuran-derivatives, 3-hydroxy-carbofuran (HCF) and 3-keto-carbofuran (KCF), has been investigated in basic media. An inhibition upon the basic hydrolysis of 3-hydroxy-carbofuran and 3-keto-carbofuran (similar to 1.7 and similar to 1.5-fold, respectively) was observed and it was rationalized in terms of the micellar pseudophase model. Nevertheless, non-significant effect upon the carbofuran stability was found in the presence of humic substances. These behaviors have been compared with the corresponding ones in other synthetic colloidal aggregates. (C) 2012 Elsevier Ltd. All rights reserved.
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