Record Display for the EPA National Library Catalog


Main Title Method for the supercritical fluid extraction of soils/sediments
Author Lopez-Avila, Viorica. ; Dodhiwala., N. S.
Other Authors
Author Title of a Work
Dodhiwala, N. S.
Beckert, Werner F.
CORP Author Mid-Pacific Environmental Lab., Mountain View, CA.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Publisher U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory ;
Year Published 1990
Report Number EPA/600/4-90/026; EPA-68-03-3511; PB91127803
Stock Number PB91-127803
OCLC Number 33319986
Subjects Supercritical fluid extraction
Additional Subjects Soils ; Carbon dioxide ; Sediments ; Pesticides ; Aromatic polycyclic hydrocarbons ; Alkalies ; Cost analysis ; Tables(Data) ; Graphs(Charts) ; Supercritical gas extraction ; Land pollution ; Laboratory tests ; Polychlorobiphenyl compounds ; Acids
Library Call Number Additional Info Location Last
EMBD  EPA/600/4-90/026 NRMRL/GWERD Library/Ada,OK 10/27/1995
NTIS  PB91-127803 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, 137, 80, 17 p. : ill. ; 28 cm.
Supercritical fluid extraction has been publicized as an extraction method which has several advantages over conventional methods, and it is expected to result in substantial cost and labor savings. The study was designed to evaluate the feasibility of using supercritical fluid extraction as a sample extraction method for pollutants and matrices of concern to the EPA. Various matrices were spiked with compounds from several classes of pollutants and were extracted with supercritical carbon dioxide, with and without modifiers. Based on the results, a preliminary protocol was developed which was then tested with additional simple and complex matrices. Another important segment of the work was to study the influence of variables on recoveries. The results of the study indicate that supercritical fluid extraction with carbon dioxide, with or without modifiers, is an attractive method for the extraction of organic contaminants from environmental solid matrices. Potential advantages of the method include less solvent use and disposal, reduced manpower requirement, and increased speed and selectivity. However, more developmental work has to be done before supercritical fluid extraction becomes an easy-to-use, off-the-shelf method.
"November 1990." "EPA/600/4-90/026." "Contract no. 68-03-3511." "Project officer, Werner F. Beckert."