Heterogeneous ozonation kinetics of polycyclic aromatic hydrocarbons on organic films

Kahan, Tara F.; Kwamena, N.-O.A.; Donaldson, D. J.

doi:10.1016/j.atmosenv.2006.02.004

Cited by 127 publications

(190 citation statements)

References 26 publications

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“…Interestingly, the reactions of ozone with a number of other surface-bound organics which are chemically dissimilar have also been observed to have kinetics consistent with a L-H mechanism. This includes reactions with soot, 245,246 benzo[a]-pyrene on soot, 247 polycyclic aromatic hydrocarbons at the air-water interface 207,211,213,214 chlorophyll at the air-water interface 248 and aqueous salt aerosols containing oleate. 249 More recently, the ozonolysis of the 8-carbon alkene SAM has been revisited using ZnSe and SiO x -coated ZnSe ATR crystals.…”

Section: This Journal Is C the Owner Societies 2009mentioning

confidence: 99%

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

Finlayson-Pitts

2009

Phys. Chem. Chem. Phys.

231

272

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Section: This Journal Is C the Owner Societies 2009mentioning

confidence: 99%

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

Finlayson-Pitts

2009

Phys. Chem. Chem. Phys.

231

272

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“…Thus, the heterogeneous reactions of these compounds may be the main degradation pathway in the atmosphere. 10 In the past decade, kinetics of heterogeneous reactions between gas-phase oxidants (NO 2 , O 3 , and OH radicals) and PAHs adsorbed on various carrier surfaces (soot, mineral particles, organic aerosols, etc.) have been studied intensively.…”

Section: ■ Introductionmentioning

confidence: 99%

Kinetic Studies of Heterogeneous Reactions of Polycyclic Aromatic Hydrocarbon Aerosols with NO₃Radicals

Liu

Zhang

Yang

et al. 2012

Environ. Sci. Technol.

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Polycyclic aromatic hydrocarbons (PAHs) and their derivates are mutagenic and carcinogenic substances widely distributed in the atmospheric environment. In this study, effective rate constants for heterogeneous reactions of NO 3 radicals with five 4-ring PAHs [benzo [a]anthracene (BaA), chrysene (Ch), pyrene (Py), 1-nitropyrene (1-NP), and 1-hydroxypyrene (1-OHP)] adsorbed on suspended azelaic acid particles are investigated by a mixed-phase relative rate method with gas-phase isoprene as the reference substance. The concentrations of suspended PAH particles and gas-phase isoprene are monitored concurrently by a real-time vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS) and an online atmospheric gas analysis mass spectrometer, respectively. The obtained effective rate constants for the reactions of BaA, Ch, Py, 1-NP, and 1-OHP particles with NO 3 radicals are 4.3 × 10 −12 , 4.0 × 10 −12 , 6.4 × 10 −12 , 1.3 × 10 −12 , and 1.0 × 10 −11 cm 3 ·molecule −1 ·s −1 , respectively, and their corresponding atmospheric lifetimes range from several minutes to half an hour at the NO 3 radical concentration of 5 × 10 8 molecules·cm −3 . In addition, the NO 3 uptake coefficients on particulate PAHs are estimated according to the consumption of PAHs under the exposure of NO 3 radicals. The experimental results of these heterogeneous reactions in the aerosol state provide supplementary knowledge for kinetic behaviors of airborne PAHs particles.

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“…Three-to four-ring PAHs are semi-volatile and these compounds partition between the gas and solid phases in the atmosphere (Sitaras et al, 2004). Five and more rings PAHs tend to be mainly associated with particles having size <1 mm (Kahan et al, 2006;Gross and Bertram, 2008;Pitts et al, 1980;Vione et al, 2004). These pollutants have received considerable research attention since they have mutagenic and carcinogenic effects on humans (Pitts et al, 1980;Kou et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Heterogeneous ozonation was also studied with PAHs associated with different organic and inorganic substrates, such as soot, fly ash, water droplets, etc. (Murray and Singh, 1997;Kamens et al, 1985;Raja and Valsaraj, 2006;Kwamena et al, 2004;Perraudin et al, 2007a,b;Beltran et al, 1995Beltran et al, ,, 1999Kahan et al, 2006). Three-ring member phenanthrene exists mainly in gas phase in ambient air (May and Wise, 1984;Niles and Tan, 1989;Arey et al, 1987;Helmig and Harger, 1994;Vasilakos et al, 2007) because of its high vapor pressure at room temperature (1.6 Â 10 À2 Pa, 298 K, Osborn and Douslin, 1975).…”

Section: Introductionmentioning

confidence: 99%

Homogeneous and heterogeneous reactions of phenanthrene with ozone

Zhang

Yang

Meng

et al. 2010

Atmospheric Environment

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a b s t r a c tThe reactions of gas-phase phenanthrene and suspended phenanthrene particles with ozone were conducted in a 200l chamber. The secondary organic aerosol formation was observed in the reaction of gas-phase phenanthrene with ozone and simultaneously the size distribution of the secondary organic aerosol was monitored with a scanning mobility particle sizer during the formation process. The particulate ozonation products from both reactions were analyzed with a vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer. 2,2 0 -Diformylbiphenyl was identified as the dominant product in both homogeneous and heterogeneous reactions of phenanthrene with ozone. GC/MS analysis of ozonation products of phenanthrene in glacial acetic acid was carried out for assigning time-of-flight mass spectra of reaction products formed in the homogeneous and heterogeneous reactions of phenanthrene with ozone.

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Heterogeneous ozonation kinetics of polycyclic aromatic hydrocarbons on organic films

Cited by 127 publications

References 26 publications

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

Kinetic Studies of Heterogeneous Reactions of Polycyclic Aromatic Hydrocarbon Aerosols with NO₃Radicals

Homogeneous and heterogeneous reactions of phenanthrene with ozone

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Heterogeneous ozonation kinetics of polycyclic aromatic hydrocarbons on organic films

Cited by 127 publications

References 26 publications

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

Kinetic Studies of Heterogeneous Reactions of Polycyclic Aromatic Hydrocarbon Aerosols with NO3Radicals

Homogeneous and heterogeneous reactions of phenanthrene with ozone

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Kinetic Studies of Heterogeneous Reactions of Polycyclic Aromatic Hydrocarbon Aerosols with NO₃Radicals