Volume 9, Issue 6 pp. 731-735
Short Communication
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Henry's law constants for selected pesticides, PAHs and PCBs

Nicholas J. Fendinger

Corresponding Author

Nicholas J. Fendinger

U.S. Department of Agriculture, ARS, Environmental Chemistry Laboratory, Beltsville, Maryland 20705

U.S. Department of Agriculture, ARS, Environmental Chemistry Laboratory, Beltsville, Maryland 20705Search for more papers by this author
Dwight E. Glotfelty

Dwight E. Glotfelty

U.S. Department of Agriculture, ARS, Environmental Chemistry Laboratory, Beltsville, Maryland 20705

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First published: June 1990
Citations: 42

Abstract

Henry's law constants (HLCs) were determined for 12 pesticides, 9 polynuclear aromatic hydrocarbons (PAHs) and 2 polychlorinated biphenyl (PCB) congeners using a wetted-wall column (WWC) technique. The WWC equilibrates an organic solute between a thin film of water and a concurrent flow of air in a vertical column. Air and water collected from the WWC were either solvent extracted or trapped on solid phase sorbents and were analyzed by gas chromatographic methods. HLCs were calculated from analyte concentrations in air and water collected from the WWC. Results of the HLCs determined by the WWC are compared with calculated values and determinations made by other investigators using purge bottle and static equilibration techniques.

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