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Web URL(s):https://dl.sciencesocieties.org/publications/jeq/articles/30/5/1618
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https://dl.sciencesocieties.org/publications/jeq/pdfs/30/5/1618
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Publication Type:
i
Refereed
Author(s):Xu, Feng; Liang, Xinmiao; Lin, Bingcheng; Su, Fan; Schramm, Karl-Werner; Kettrup, Antonius
Author Affiliation:Xu, Liang, Lin, and Su: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China; Schramm and Kettrup: GSF-National Research Center for Environment and Health, Institute of Ecological Chemistry, Germany
Title:Prediction of soil organic partition coefficients by a soil leaching column chromatographic method
Section:Organic compounds in the environment
Other records with the "Organic compounds in the environment" Section
Source:Journal of Environmental Quality. Vol. 30, No. 5, September/October 2001, p. 1618-1623.
Publishing Information:Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
# of Pages:6
Keywords:TIC Keywords: Pesticide fate; Pesticide persistence; Techniques; Assessment
Abstract/Contents:"The soil organic partition coefficient (Koc) is one of the most important parameters to depict the transfer and fate of a chemical in the soil-water system. Predicting Koc by using a chromatographic technique has been developing into a convenient and low-cost method. In this paper, a soil leaching column chromatography (SLCC) method employing the soil column packed with reference soil GSE 17201 (obtained from Bayer Landwirtschaftszentrum, Monheim, Germany) and methanol-water eluents was developed to predict the Koc of hydrophobic organic chemicals (HOCs), over a log Koc range of 4.8 orders of magnitude, from their capacity factors. The capacity factor with water as an eluent (k'w) could be obtained by linearly extrapolating capacity factors in methanol-water eluents (k') with various volume fractions of methanol [methanol]. The important effects of solute activity coefficients in water on k'w and log K'oc were illustrated. Hence, the correlation between log Koc and log k'w ( and log k') exsists in the soil. The correlation coefficient (r) of the log Koc vs. log k'w correlation for 58 apolar and polar compunds could reach 0.987, while the correlation coefficients of the log Koc-log k' correlations were no less than 0.968, with [methanol] ranging from 0. to 0.50. The smaller the [methanol], the higher the r. Therefore, it is recommended that the eluent of smaller [methanol], such as water, be used for accurately estimating Koc. Correspondingly, the r value of the log Koc-log k'w correlation on a reversed-phase Hypersil ODS (Thermo Hypersil, Kleinostheim, Germany) column was less than 0.940 for the same solutes. The SLCC method could provide a more reliable route to predict Koc indirectly from a correlation with k'w than the reversed-phase liquid chromatographic (RPLC) one."
Language:English
References:15
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Xu, F., X. Liang, B. Lin, F. Su, K.-W. Schramm, and A. Kettrup. 2001. Prediction of soil organic partition coefficients by a soil leaching column chromatographic method. J. Environ. Qual. 30(5):p. 1618-1623.
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https://dl.sciencesocieties.org/publications/jeq/articles/30/5/1618
    Last checked: 12/14/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/30/5/1618
    Last checked: 12/14/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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