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Genotoxicity of two polycyclic aromatic hydrocarbons declines as they age in soil
Author(s) -
Alexander Renee R.,
Alexander Martin
Publication year - 1999
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620180610
Subject(s) - genotoxicity , pyrene , pseudomonas putida , environmental chemistry , chemistry , persistence (discontinuity) , mutant , benzo(a)pyrene , carcinogen , soil contamination , benzopyrene , toxicology , toxicity , biology , organic chemistry , soil water , biochemistry , ecology , geotechnical engineering , engineering , gene , enzyme
Rifampicin‐resistant mutations were induced in Pseudomonas putida A11rUV growing in soil containing 9,10‐dimethyl‐1,2‐benzanthracene and benzo[ a ]pyrene. Aging of the compounds for 7 d caused a marked decrease in the mutation rates, and the number of mutants was further reduced after 15 d of aging. Longer persistence of the compound in soil did not further diminish the number of mutants. Vigorous solvent extraction showed that the concentration of the compounds had not diminished with the marked decline in genotoxicity. The data demonstrate that genotoxicity of such compounds aged in soil declines with little or no loss of the compound.