Record Display for the EPA National Library Catalog


Main Title Superfund Innovative Technology Evaluation (SITE) : program evaluation report for Antox BTX water screen (BTX immunoassay)
Author Gerlach, R. W. ; White, R. J. ; O'Leary, N. F. ; Van Emon, J. M.
Other Authors
Author Title of a Work
Gerlach, R. W.
Van Emon, Jeanette M.
CORP Author Lockheed Engineering and Sciences Co., Las Vegas, NV.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Monitoring Systems Laborartory ; available from the National Technical Information Service,
Year Published 1993
Report Number EPA/540/R-93/518; 68-CO-0049
Stock Number PB93-218337
OCLC Number 36679654
Subjects Drinking water--Contamination
Additional Subjects Superfund Innovative Technology Evaluation Program (US) ; Water pollution detection ; Ground water ; Immunoassay ; Gas chromatography ; Gasoline ; Oil pollution ; Underground storage ; Storage tanks ; Seepage ; Field tests ; BTX(Benzene Toluene Xylene) ; SITE(Superfund Innovative Technology Evaluation)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD  EPA 540-R-93-518 AWBERC Library/Cincinnati,OH 03/14/1998
NTIS  PB93-218337 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 91 p. : ill. ; 28 cm.
The results of a demonstration of a portable immunoassay for the detection of benzene, toluene, and xylene(s) (BTX) are described in the report. Seventy-nine field samples were obtained from monitoring wells at several sites with gasoline contaminated ground water. Sample splits were analyzed on-site by the BTX immunoassay and in the laboratory by gas chromatography (GC) using EPA Method 8020. The BTX immunoassay was rapid and simple to use. It performed well in identifying high level contamination and gasoline contaminated samples having BTX concentrations greater than 100 ppb. It did not fully meet the claims of the developer of identifying contamination levels down to 25 ppb BTX. Two field samples determined by GC to have between 25 and 100 ppb BTX failed to be classified correctly by the immunoassay. Results from quality assurance samples with BTX concentrations of 2.5, 25, and 100 ppb also showed that false negative results would be expected at higher than a 5 percent rate when BTX contamination levels were between 25 and 100 ppb. However, for samples with higher BTX levels, the immunoassay gave excellent results. Two field samples yielded false positive results compared to GC values, but these samples showed signs of low-level gasoline contamination.
"EPA/540/R-93/518." "June 1993." "EPA contract number 68-CO-0049." "Work assignment manager J. M. Van Emon."