Record Display for the EPA National Library Catalog

RECORD NUMBER: 49 OF 124

OLS Field Name OLS Field Data
Main Title Evaluation of a Continuous Liquid-Liquid Extractor for Isolation and Concentration of Nonpolar Organics for Biological Testing in the Presence of Humic Materials.
Author Baker, R. J. ; Suffet, I. H. ;
CORP Author Drexel Univ., Philadelphia, PA. Environmental Studies Inst.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1986
Report Number EPA/600/D-86/019;
Stock Number PB86-147527
Additional Subjects Water analysis ; Extraction ; Organic compounds ; Bioassay ; Humic acid ; Separation ; Chemical analysis ; Performance evaluation ; Design criteria ; Laboratory equipment ; Water pollution ; Water pollution detection
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB86-147527 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 33p
Abstract
A continuous liquid-liquid extraction system (CLLE) for concentrating trace organics from water into methylene chloride for analysis was designed, built and evaluated. The CLLE uses Teflon coils for phase contact and gravity phase separation. The system includes a self-contained excess solvent distillation chamber, so the methylene chloride is recovered and recycled. Fourteen organic model compounds in the presence of humic material were used as test probes to evaluate the CLLE. Recovery values were determined for these compounds using CLLE and batch LLE (separatory funnel liquid-liquid extraction), and CLLE recoveries were found to be similar to those of batch LLE.