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RECORD NUMBER: 31 OF 261

OLS Field Name OLS Field Data
Main Title Chlorination of aquatic humic substances /
Author Christman, R. F. ; Johnson, J. D. ; Norwood, D. L. ; Liao, W. T. ; Hass., J. R.
Other Authors
Author Title of a Work
Christman, R. F.
CORP Author North Carolina Univ. at Chapel Hill. Dept. of Environmental Sciences and Engineering.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory,
Year Published 1981
Report Number EPA/600/2-81/016; EPA-R-804430
Stock Number PB81-161952
Subjects Humic acid. ; Chlorination.
Additional Subjects Humic acids ; Chlorination ; Water analysis ; Oxidation ; Gas chromatography ; Mass spectroscopy ; Precipitation(Chemistry) ; Chemical analysis ; Chemical reactions ; Potable water ; Water pollution ; Tables(Data) ; Molecular structure ; Water pollution detection ; XAD 2 resin
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB81-161952 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 178 pages : illustrations ; 28 cm
Abstract
This research program was initiated with the overall objective of increasing our understanding of the chemical structures of aquatic humic material and their behavior during chemical oxidation in particular with chlorine. Experimental methods were devised for the isolation of humic and fulvic acid fractions from natural surface waters. These methods involve the classical precipitation of humic acids from large volumes of raw water followed by concentration through settling and centrifugation. Fulvic acid materials were concentrated by adsorption on macroreticular XAD-2 resin followed by base elution. Experimental conditions were devised for the controlled oxidation of these samples with KMnO4 and with aqueous chlorine solutions followed by solvent extraction, formation of methyl esters and GC/MS analysis. The criteria for identification of degradation products employing low resolution EI, high resolution EI, and CI mass spectrometry are included in appended material. Chlorination experiments were also conducted on selected model compounds as dictated by the results of the whole sample degradation experiments.
Notes
Caption title. "January 1981." "EPA-600/2-81-016." Microfiche.