Retention behavior of hydrophobic organic chemicals as a function of temperature in soil leaching column chromatography
文献类型：期刊论文
| 作者 | Liang, XM; Xu, F; Lin, BC; Su, F; Schramm, KW; Kettrup, A |
| 刊名 | chemosphere
 |
| 出版日期 | 2002-11-01 |
| 卷号 | 49期号:6页码:569-574 |
| 关键词 | soil leaching column chromatography retention factor temperature enthalpy linear solvation energy relationships |
| 英文摘要 | to study the transport mechanism of hydrophobic organic chemicals (hocs) and the energy change in soil/solvent system, a soil leaching column chromatographic (slcc) experiment at an environmental temperature range of 20-40 degreesc was carried out, which utilized a reference soil (sp 14696) packed column and a methanol-water (1:4 by volume ratio) eluent. the transport process quickens with the increase of column temperature. the ratio of retention factors at 30 and 40 degreesc (k'(30)/k'(40)) ranged from 1.08 to 1.36. the lower enthalpy change of the solute transfer in slcc (from eluent to soil) than in conventional reversed-phase liquid chromatography (e.g., from eluent to c-18) is consistent with the hypothesis that hocs were dominantly and physically partitioned between solvent and soil. the results were also verified by the linear solvation energy relationships analysis. the chief factor controlling the retention was found to be the solute solvophobic partition, and the second important factor was the solute hydrogen-bond basicity, while the least important factors were the solute polarizability-dipolarity and hydrogen-bond acidity. with the increase of temperature, the contributions of the solute solvophobic partition and hydrogen-bond basicity gradually decrease, and the latter decreases faster than the former. (c) 2002 elsevier science 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] | performance liquid-chromatography ; solvation energy relationships ; sorption ; groundwater ; equilibria ; pesticides ; water ; model ; naphthalene ; cosolvents |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000178631800007 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/85485]  |
| 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 | Liang, XM,Xu, F,Lin, BC,et al. Retention behavior of hydrophobic organic chemicals as a function of temperature in soil leaching column chromatography[J]. chemosphere,2002,49(6):569-574. |
| APA | Liang, XM,Xu, F,Lin, BC,Su, F,Schramm, KW,&Kettrup, A.(2002).Retention behavior of hydrophobic organic chemicals as a function of temperature in soil leaching column chromatography.chemosphere,49(6),569-574. |
| MLA | Liang, XM,et al."Retention behavior of hydrophobic organic chemicals as a function of temperature in soil leaching column chromatography".chemosphere 49.6(2002):569-574. |
入库方式： OAI收割
来源：大连化学物理研究所
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