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RECORD NUMBER: 191 OF 248

OLS Field Name OLS Field Data
Main Title Solvent Extraction of Organic Water Pollutants.
Author Webb, Ronald G. ;
CORP Author Environmental Research Lab., Athens, GA.
Year Published 1978
Report Number EPA/600/J-78/067;
Stock Number PB-289 237
Additional Subjects Water analysis ; Solvent extraction ; Organic compounds ; Water pollution ; Chemical analysis ; Sampling ; pH ; Water pollution detection ; Reprints
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NTIS  PB-289 237 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 18p
Abstract Based on experiments with model systems of known organic water pollutants and environmental samples, conclusions are reached concerning the best general solvent for extraction and the most appropriate methods for related manipulations. Chloroform, methylene chloride-ether mixtures, and methylene chloride are the best solvents for general extraction purposes. Methylene chloride is recommended. Most samples should be extracted first at basic and then acidic pH. The analyst has very little control over emulsion formation through choice of solvent or by pH adjustment, but continuous liquid-liquid extractors overcome most emulsion problems. For highest recovery of extracted pollutants, extracts should not be treated with drying agents before concentration. Final evaporation of extracts using a micro-Snyder column is recommended over evaporation with a steam of inert gas.
Supplementary Notes Pub. in International Jnl. of Environmental Analytical Chemistry, v5 n3, p239-252, 1978.
NTIS Title Notes Journal article.
Title Annotations Reprint: Solvent Extraction of Organic Water Pollutants.
PUB Date Free Form 1978
Category Codes 7D; 68D; 99A
NTIS Prices PC A02/MF A01
Primary Description 600/01
Document Type NT
Cataloging Source NTIS/MT
Control Number 323753229
Origin NTIS
Type CAT