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OLS Field Name OLS Field Data
Main Title Influence of Macromolecules on Chemical Transport.
Author Enfield, C. G. ; Bengtsson, G. ; Lindqvist, R. ;
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK. ;Lund Univ. (Sweden). Dept. of Ecological Chemistry.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/277;
Stock Number PB90-185125
Additional Subjects Water pollution ; Soil analysis ; Molecules ; Mobility ; Mathematical models ; Isotherms ; Least squares method ; Absorption ; Reprints ; Environmental transport
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NTIS  PB90-185125 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/15/1990
Collation 11p
Abstract Macromolecules in the pore fluid influence the mobility of hydrophobic compounds through soils. The study evaluated the significance of macromolecules in facilitating chemical transport under laboratory conditions. Partition coefficients between (14)C-labeled hexachlorobenzene and three macromolecules (dextran, humic acid, and groundwater dissolved organic carbon (DOC)) were determined in a three-phase (water-macromolecule-soil) system. There were significant differences between the macromolecule:water partition coefficients, which ranged from 1 X 10 sup 3 to 1 X 10 sup 6. Soil:water partitioning for humic acid was demonstrated by using column breakthrough curves where the breakthrough curve for humic acid was retarded behind (3)H2O. Breakthrough curves for dextran and groundwater DOC demonstrated apparent size exclusion, as these compounds eluted from the soil column before the (3)H2O. The impact of the dextran was demonstrated under dynamic conditions by use of hexachlorobenzene, anthracene, and pyrene with and without macromolecules in replicated, biologically inhibited (sodium azide), saturated soil columns. (Copyright (c) 1989 American Chemical Society.)
Supplementary Notes Pub. in Environmental Science and Technology, v23 n10 p1278-1286 Oct 89. Prepared in cooperation with Lund Univ. (Sweden). Dept. of Ecological Chemistry.
NTIS Title Notes Journal article.
Title Annotations Reprint: Influence of Macromolecules on Chemical Transport.
Category Codes 68D; 99F
NTIS Prices PC A03/MF A01
Primary Description 600/15
Document Type NT
Cataloging Source NTIS/MT
Control Number 011721489
Origin NTIS
Type CAT