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Investigation on the influence of methanol on adsorption and leaching of pesticides with soil column liquid chromatography
Ni, YW; Liang, XM; Chen, JP; Zhang, Q; Ma, LX; Wu, WZ; Kettrup, A
关键词Methanol Adsorption Coefficients Retardation Factors Pesticides Soil Column Liquid Chromatography
刊名CHEMOSPHERE
2004-09-01
DOI10.1016/j.chemosphere.2004.05.012
56期:11页:1137-1142
收录类别SCI
文章类型Article
项目归属103
产权排名1;1
WOS标题词Science & Technology ; Life Sciences & Biomedicine
类目[WOS]Environmental Sciences
研究领域[WOS]Environmental Sciences & Ecology
关键词[WOS]HYDROPHOBIC ORGANIC-CHEMICALS ; SORPTION ; COSOLVENTS ; WATER ; COEFFICIENTS ; TRANSPORT ; SYSTEMS ; SOLVENT
英文摘要The effect of methanol of low concentration on adsorption and leaching of atrazine and tebuconazole was studied in this paper. The adsorption coefficients and the retardation factors (R-m) of pesticides on EUROSOIL 3# log-linearly decreased as volumetric fraction of methanol (f(c)) was increased in the binary solvent mixtures of methanol and water. These data are consistent with solvophobic theory formerly outlined for describing the adsorption and transport of hydrophobic organic chemicals from mixed solvents. Nevertheless, the adsorption of these pesticides in soil-water system slightly increased when the soil was pre-washed with methanol in comparison with that pre-washed with water (pure water system). Furthermore, their adsorption coefficients were still higher in binary solvent systems with methanol of very low concentrations, i.e. f(c) < 0.03 for atrazine and f(c) < 0.01 for tebuconazole, than those in pure water system. The adsorption coefficients (logK(w)) of atrazine and tebuconazole predicted by solvophobic theory were 0.5792 and 1.6525, respectively, and their experimental logK(w) were 0.3701 and 1.6275 in pure water system. Obviously, the predicted log K-w of the two pesticides was higher than the experimental log K-w in pure water system. The predicted K-w and the retardation factor (R-w) in pure water system by solvophobic theory are thus possibly inaccurate. (C) 2004 Elsevier Ltd. All rights reserved.
语种英语
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WOS记录号WOS:000223209300013
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81663
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116011, Peoples R China
2.GSF, Natl Res Ctr Environm & Hlth, Inst Ecol Chem, D-85764 Neuherberg, Germany
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Ni, YW,Liang, XM,Chen, JP,et al. Investigation on the influence of methanol on adsorption and leaching of pesticides with soil column liquid chromatography[J]. CHEMOSPHERE,2004,56(11):1137-1142.
APA Ni, YW.,Liang, XM.,Chen, JP.,Zhang, Q.,Ma, LX.,...&Kettrup, A.(2004).Investigation on the influence of methanol on adsorption and leaching of pesticides with soil column liquid chromatography.CHEMOSPHERE,56(11),1137-1142.
MLA Ni, YW,et al."Investigation on the influence of methanol on adsorption and leaching of pesticides with soil column liquid chromatography".CHEMOSPHERE 56.11(2004):1137-1142.
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