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SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION (SITE) PROGRAM EVALUATION REPORT FOR ANTOX BTX WATER SCREEN (BTX IMMUNOASSAY)
Citation:
Gerlach, R., R. White, N. O'Leary, AND J. Emon. SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION (SITE) PROGRAM EVALUATION REPORT FOR ANTOX BTX WATER SCREEN (BTX IMMUNOASSAY). U.S. Environmental Protection Agency, Washington, D.C., EPA/540/R-93/518.
Description:
The results of a demonstration of a portable say for the detection of benzene, toluene, and xylene(s) (BTX) are described in this report. he BTX say was developed by Antox, Inc., (South Portland, ME) and is intended as a screening technology. even field samples were obtained from monitoring at several sites with gasoline contaminated ground water. ample splits were analyzed on-site by the BTX assay and in the laboratory by gas chromatography (GC) using EPA Method 8020. he BTX assay was rapid and simple to use. t performed well in identifying high level contamination and gasoline contaminated samples having BTX concentrations greater than 100 ppb. t did not fully meet the claims of the developer of identifying contamination levels down to 25 ppb BTX. wo field amples determined by GC to have between 2-5 and 100 ppb BTX failed to be classified correctly by the say. esults from quality assurance samples with BTX concentrations of 2.5, 25, and 100 ppb lso showed that false negative results would be expected at higher than a 5 percent rate when BTX contamination levels were between 2-5 and 100 ppb. owever, for samples with higher BTX levels, the immunoassay gave excellent results. wo field samples yielded false positive results to GC values, but these samples showed signs of low-level gasoline contamination. his technology could provide cost-effective screening or monitoring functions at sites with ground water contaminated by gasoline or other fuels. t could also be used in a laboratory setting to select samples for further analysis.