I. Franco, C. Vischetti, M. T. Baca, M. Nobili, C. Mondini, L. Leita
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引用次数: 10
Abstract
We studied the adsorption of two herbicides of different polarity, linuron and metamitron, by a mineral soil and two peats at different decomposition stages and determined Freundlich and distribution coefficients per unit of organic matter. The Freundlich adsorption constant (K1) was 20‐to 30‐fold higher in the case of linuron and 40‐to 90‐fold higher for metamitron for the organic materials (peats) than for the mineral soil, reflecting adsorption dependence on both organic matter content and type. The well‐decomposed peat showed the highest affinity for both herbicides. Hydro‐phobic bonding is suggested as a possible explanation. For linuron, the variation in K, was reduced to less than a twofold variation in Koc by normalizing adsorption to organic carbon, whereas for metamitron, Koc values were not constant, confirming that this parameter may be of little meaning for polar compounds.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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