Molecular Compositions, Mutagenicity, and Mutation Spectra of Atmospheric Oxidation Products of Alkenes and Dienes Initiated by NOx + UV or Ozone: A Structure–Activity Analysis

Photooxidation products resulting from volatile organic compounds (VOCs) reacting with sunlight are important contributors to gas-phase air pollution. We characterized the product-weighted mutagenic potencies (rev m3 mgC–1 h–1) in Salmonella TA100 of atmospheres resulting from the hydroxyl radical (...

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Veröffentlicht in:	Environmental science & technology 2024-10, Vol.58 (42), p.18846-18855
Hauptverfasser:	Lewandowski, Michael, Riedel, Theran P., Krug, Jonathan D., Kleindienst, Tadeusz E., Meier, Matthew J., Long, Alexandra S., Warren, Sarah H., DeMarini, David M.
Format:	Artikel
Sprache:	eng
Schlagworte:	1,3-Butadiene Air pollution Alkenes Alkenes - chemistry Atmosphere Atmosphere - chemistry Chemical composition Dienes Functional groups Hydroxyl radicals Ionization irradiation Isoprene Lung cancer lung neoplasms Mass spectrometry Mass spectroscopy Methylbutenes Molecular structure Mutagenicity mutagens Mutagens - chemistry Mutagens - toxicity Mutation nitrates Nitric oxide nitrogen Occurrence, Fate, and Transport of Contaminants in Indoor Air and Atmosphere Organic compounds Oxidation Oxidation-Reduction ozone Ozone - chemistry ozonolysis Peroxyacetyl nitrate Photochemicals Photochemistry Photooxidation Salmonella solar radiation Ultraviolet Rays VOCs Volatile organic compounds Volatile Organic Compounds - chemistry
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Zusammenfassung:	Photooxidation products resulting from volatile organic compounds (VOCs) reacting with sunlight are important contributors to gas-phase air pollution. We characterized the product-weighted mutagenic potencies (rev m3 mgC–1 h–1) in Salmonella TA100 of atmospheres resulting from the hydroxyl radical (OH)-initiated photochemical oxidation of 11 C4 or C5 alkenes or dienes in the presence of nitric oxide (NO) and from the ozonolysis of four VOCs without NO (isoprene; 1,3-pentadiene; 1,4-pentadiene; and 1,3-butadiene). Irradiated atmospheres from precursors with a single CC bond (3-methyl-1-butene, 2-methyl-1-butene, cis/trans-2-pentene, 2-methyl-2-butene, 1-butene, and 1-pentene) had low potencies (
ISSN:	0013-936X 1520-5851 1520-5851
DOI:	10.1021/acs.est.4c04603