Main Title |
Evaluation of Modifications to Extraction Procedures Used in Analysis of Environmental Samples from Superfund Sites. |
Author |
Valkenburg, C. A. ;
Munslow, W. D. ;
Butler, L. C. ;
|
CORP Author |
Lockheed Engineering and Sciences Co., Inc., Las Vegas, NV.;Environmental Protection Agency, Las Vegas, NV. |
Publisher |
c1989 |
Year Published |
1989 |
Report Number |
EPA-68-03-3249; EPA/600/J-89/061; |
Stock Number |
PB90-103516 |
Additional Subjects |
Chemical analysis ;
Waste disposal ;
Site surveys ;
Solvent extraction ;
Chloromethanes ;
Continuous sampling ;
Experimental design ;
Revisions ;
Tables(Data) ;
Concentration(Composition) ;
pH ;
Gas chromatography ;
Mass spectroscopy ;
Reprints ;
Superfund program ;
Target Compound List
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB90-103516 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
Recoveries from an aqueous sample of the semi-volatile analytes listed on the EPA Target Compound List are compared using 6 different methylene chloride extraction procedures. Four experimental designs incorporating a continuous extraction apparatus are evaluated, and 2 experimental designs using separatory funnel methods are tested. In addition, 2 concentration procedures are compared, and the loss of analytes associated with both extraction and concentration procedures are determined. These studies indicate that the most efficient and economical technique for the extraction of these compounds from an aqueous matrix is a single continuous extraction procedure performed at 2 pH. |