Stability study of Iprodione in alkaline media in the presence of humic acids

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• 作者：Jorge Morales ; Jos¨¦ A. Manso ; Antonio Cid ; Juan C. Mejuto
• 关键词：Iprodione ; Humic acids ; Hydrolysis ; Colloids ; Xenobiotic ; Humic substances
• 刊名：Chemosphere
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：92
• 期：11
• 页码：1536-1541
• 全文大小：533 K

文摘

The influence of humic aggregates in water solution upon the chemical stability of Iprodione has been investigated under basic conditions. Taking into account that an important part of soils are colloids, the possibility of its presence implies that soil composition and its structure will play an important role in the stability of this pesticide. A kinetic model was applied to this system and the kinetic coefficients were obtained. An inhibition upon the alkaline hydrolysis of Iprodione (2-fold) was observed and it was rationalized in terms of the micellar pseudophase model. These results have been compared with the corresponding ones in the same natural colloidal aggregates in the presence of other pesticides.