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MUTAGENICITY AND CHEMICAL ANALYSIS OF EMISSIONS FROM THE OPEN BURNING OF SCRAP RUBBER TIRES
Citation:
DeMarini, D., P. Lemieux, J. Ryan, R. Williams, L. Brooks, Y. Ahmed, B. McCarry, AND D. Bryant. MUTAGENICITY AND CHEMICAL ANALYSIS OF EMISSIONS FROM THE OPEN BURNING OF SCRAP RUBBER TIRES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/057 (NTIS PB94143773), 1994.
Description:
The paper discusses the use of the Salmonella mutagenicity assay to perform bioassay-directed chemical analysis of emissions from the open burning of scrap rubber tires in both a small laboratory study using tires cut into two sizes (CHUNK and SHRED) and a field study of the largest North American tire fire (in February 1990, in Ontario, Canada). ioassays using selected strains of Salmonella indicated that dinitroarenes or aromatic amines (but not mononitroaromatics) accounted for much of the mutagenic activity measured in the absence of S9 of both the laboratory and field samples. ide variety of polycyclic aromatic hydrocarbons were detected in the most mutagenic fractions of both the laboratory and field particulate organics. he similar chemical composition and mutagenic effects of the field and laboratory samples provide some confidence in extrapolating the laboratory results to the field study or other real-world tire fires. he analysis results demonstrate for the first time that the open burning of scrap rubber tires produces particulate emissions with one of the highest mutagenic potentials measured by this method.
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MUTAGENICITY AND CHEMICAL ANALYSIS OF EMISSIONS FROM THE OPEN BURNING OF SCRAP RUBBER TIRES