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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
KeywordMethanol Adsorption Coefficients Retardation Factors Pesticides Soil Column Liquid Chromatography
Source PublicationCHEMOSPHERE
2004-09-01
DOI10.1016/j.chemosphere.2004.05.012
Volume56Issue:11Pages:1137-1142
Indexed BySCI
SubtypeArticle
Funding Project103
Contribution Rank1;1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS SubjectEnvironmental Sciences
WOS Research AreaEnvironmental Sciences & Ecology
WOS KeywordHYDROPHOBIC ORGANIC-CHEMICALS ; SORPTION ; COSOLVENTS ; WATER ; COEFFICIENTS ; TRANSPORT ; SYSTEMS ; SOLVENT
AbstractThe 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.
Language英语
URL查看原文
WOS IDWOS:000223209300013
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/81663
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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