Journal
POLYCYCLIC AROMATIC COMPOUNDS
Volume 37, Issue 2-3, Pages 101-105Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10406638.2016.1159583
Keywords
Atmospheric nitration; nitro-PAH; PAH; radical-initiated reactions
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Funding
- Ministry of the Environment, Japan [5-1306]
- Institute of Nature and Environmental Technology, Kanazawa University
- Grants-in-Aid for Scientific Research [15H02589, 16H05625, 17H01906] Funding Source: KAKEN
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CCl4 liquid-phase reaction kinetics of polycyclic aromatic compounds (PACs), including chrysene (CHRY), benz[a]anthracene (BaA), and benzanthrone (BA), with NO3 radicals were investigated at 273K using a relative rate method with naphthalene (NA) as the reference compound. The obtained relative reaction rates of CHRY, BaA, and BA to NA were 1.76 +/- 0.08, 2.27 +/- 0.20, 0.75 +/- 0.01, respectively. CHRY, BaA, and BA are semi-volatile PACs with four aromatic rings. They are chemically modified into mutagenic nitropolycyclic aromatic compounds via gas-phase OH or NO3 radical-initiated reactions. Based on the PACs relative reactivity in the CCl4 liquid phase-system, the rate constants at 298K for the gas-phase reaction of CHRY, BaA, and BA with OH radicals and those of CHRY, BaA, and BA with NO3 radicals were estimated to be (in cm(3)molecule(-1)s(-1)): CHRY, (4.4 +/- 0.3) x 10(-11) and (9.2 +/- 3.2) x 10(-28) [NO2]; BaA, (5.3 +/- 0.5) x 10(-11) and (1.3 +/- 0.5) x 10(-27) [NO2]; BA, (2.3 +/- 0.1) x 10(-11) and (3.1 +/- 1.1) x 10(-28) [NO2].
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