Investigation on the influence of methanol on adsorption and leaching of pesticides with soil column liquid chromatography
文献类型：期刊论文
| 作者 | Ni, YW; Liang, XM; Chen, JP; Zhang, Q; Ma, LX; Wu, WZ; Kettrup, A |
| 刊名 | chemosphere
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 56期号:11页码:1137-1142 |
| 关键词 | methanol adsorption coefficients retardation factors pesticides soil column liquid chromatography |
| 产权排序 | 1;1 |
| 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. |
| 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 |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000223209300013 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/81663]  |
| 专题 | 大连化学物理研究所_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 |
| 推荐引用方式 GB/T 7714 | 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. |
入库方式： OAI收割
来源：大连化学物理研究所
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