Degradation of carbofuran and carbofuran-derivatives in presence of humic substances under basic conditions.
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 (≈ 1.7 and ≈ 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.
Department of Physical Chemistry, Faculty of Sciences, University of Vigo, 32004 Ourense, Spain.
Jorge
J
Morales
José A
JA
Manso
Antonio
A
Cid
Juan C
JC
Mejuto
D002235:Carbofuran / Q000737:chemistry*; D006812:Humic Substances; D006868:Hydrolysis; D007306:Insecticides / Q000737:chemistry*; D008956:Models, Chemical; D012989:Soil Pollutants / Q000737:chemistry*
D006812:Humic Substances; D007306:Insecticides; D012989:Soil Pollutants; D002235:Carbofuran