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  • 1
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    Tropospheric air pollution: ozone, airborne toxics, polycyclic aromatic hydrocarbons, and particles (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-05-16
    Description: Tropospheric air pollution has impacts on scales ranging from local to global. Reactive intermediates in the oxidation of mixtures of volatile organic compounds (VOCs) and oxides of nitrogen (NOx) play central roles: the hydroxyl radical (OH), during the day; the nitrate radical (NO3), at night; and ozone (O3), which contributes during the day and night. Halogen atoms can also play a role during the day. Here the implications of the complex VOC-NOx chemistry for O3 control are discussed. In addition, OH, NO3, and O3 are shown to play a central role in the formation and fate of airborne toxic chemicals, mutagenic polycyclic aromatic hydrocarbons, and fine particles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finlayson-Pitts, B J -- Pitts, J N Jr -- New York, N.Y. -- Science. 1997 May 16;276(5315):1045-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, Irvine, CA 92697-2025, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9148793" target="_blank"〉PubMed〈/a〉
    Keywords: Aerosols ; *Air Pollutants/analysis ; *Air Pollution/prevention & control ; Carcinogens/analysis/chemistry ; Mutagens/analysis/chemistry ; Oxidation-Reduction ; *Ozone/analysis/chemistry ; Particle Size ; *Polycyclic Hydrocarbons, Aromatic ; Risk Assessment ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Atmospheric reactions of polycyclic aromatic hydrocarbons: facile formation of mutagenic nitro derivatives (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-03
    Description: Directly active mutagens are formed on exposure of the promutagen benzo[a]pyrene to gaseous pollutants in smog. In simulated atmospheres containing 1 part per million nitrogen dioxide and traces of nitric acid, directly mutagenic nitro derivatives are readily formed from both benzo[a]pyrene and perylene, a non-mutagen in the Ames reversion assay. Possible formation of direct mutagens by such reactions on sample collection filters, in exhaust effluents, and in the atmosphere should be recognized.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pitts, J N Jr -- Van Cauwenberghe, K A -- Grosjean, D -- Schmid, J P -- Fitz, D R -- Belser, W L -- Knudson, G P -- Hynds, P M -- New York, N.Y. -- Science. 1978 Nov 3;202(4367):515-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/705341" target="_blank"〉PubMed〈/a〉
    Keywords: *Air Pollutants ; Benzopyrenes ; *Mutagens ; Nitrogen Dioxide ; Oxidation-Reduction ; Perylene ; Photochemistry ; *Polycyclic Compounds
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    "Atmospheric" Epoxidation of Benzo[a]pyrene by Ozone: Formation of the Metabolite Benzo[a]pyrene-4,5-Oxide (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-12-19
    Description: Benzo[a]pyrene deposited on a glass fiber filter reacts rapidly in the dark or light with ambient levels of ozone to yield a mixture of products that display strong direct mutagenicity in the Ames assay. The major stable contributor to this activity has been identified as benzo[a]pyrene-4,5-oxide, a DNA-binding metabolite in biological systems, known to be a strong direct mutagen with Salmonella typhimurium strain TA98.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pitts, J N Jr -- Lokensgard, D M -- Ripley, P S -- VAN Cauwenberghe, K A -- VAN Vaeck, L -- Shaffer, S D -- Thill, A J -- Belser, W L Jr -- New York, N.Y. -- Science. 1980 Dec 19;210(4476):1347-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17817846" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Factors in summer ozone production in the san francisco air basin (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, P R -- Pitts, J N Jr -- Winer, A M -- New York, N.Y. -- Science. 1979 Jan 5;203(4375):81-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17840513" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Gaseous nitrate radical: possible nighttime atmospheric sink for biogenic organic compounds (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-13
    Description: The gaseous nitrate (NO(3)) radical, which has recently been measured in nighttime ambient atmospheres over the United States and Europe at concentrations up to approximately 350 parts per trillion, has now been shown to react rapidly with the biogenically emitted organic compounds dimethyl sulfide (DMS), isoprene, and several monoterpenes. Computer simulations demonstrate that these reactions can dominate the atmospheric behavior of these organic compounds at night. Thus reaction with NO(3) radicals may be the unknown, nonphotochemical removal process for DMS recently invoked by Andreae and Raemdonck to explain the absence of a diurnal profile for DMS in maritime air influenced by continental air masses. Similarly, the nighttime reaction of NO(3) radicals with monoterpenes can be a dominant removal process, leading to very low monoterpene concentrations in ambient atmospheres during the early morning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winer, A M -- Atkinson, R -- Pitts, J N Jr -- New York, N.Y. -- Science. 1984 Apr 13;224(4645):156-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17744681" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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