Mechanism of the homogeneous oxidation of sulfur dioxide in the troposphere

Calvert, Jack G.; Su, Fu; Bottenheim, J. W.; Strausz, O. P.

doi:10.1016/0004-6981(78)90201-9

Cited by 261 publications

(72 citation statements)

References 119 publications

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“…Nucleation of particles in the atmosphere has been observed to be strongly dependent on the abundance of H 2 SO 4 (Sihto et al, 2006;Xiao et al, 2015). Normally, SO 2 was deemed to be oxidized by OH radicals to form H 2 SO 4 through homogeneous reactions in gas phase (Calvert et al, 1978) or by H 2 O 2 , and O 3 through in-cloud processes in aqueous phase (Lelieveld and Heintzenberg, 1992). However, the aqueous-phase formation of H 2 SO 4 is negligible in this study (RH < 10 %).…”

Section: Chemicalsmentioning

confidence: 99%

Photooxidation of cyclohexene in the presence of SO<sub>2</sub>: SOA yield and chemical composition

Liu

Jia

et al. 2017

Atmos. Chem. Phys.

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Abstract. Secondary organic aerosol (SOA) formation from a cyclohexene / NO x system with various SO 2 concentrations under UV light was investigated to study the effects of cyclic alkenes on the atmospheric environment in polluted urban areas. A clear decrease at first and then an increase in the SOA yield was found with increasing SO 2 concentrations. The lowest SOA yield was obtained when the initial SO 2 concentration was in the range of 30-40 ppb, while higher SOA yield compared to that without SO 2 could not be obtained until the initial SO 2 concentration was higher than 85 ppb. The decreasing SOA yield might be due to the fact that the promoting effect of acid-catalysed reactions on SOA formation was less important than the inhibiting effect of decreasing OH concentration at low initial SO 2 concentrations, caused by the competition reactions of OH with SO 2 and cyclohexene. The competitive reaction was an important factor for SOA yield and it should not be neglected in photooxidation reactions. The composition of organic compounds in SOA was measured using several complementary techniques including Fourier transform infrared (FTIR) spectroscopy, ion chromatography (IC), and Exactive Plus Orbitrap mass spectrometer equipped with electrospray interface (ESI). We present new evidence that organosulfates were produced from the photooxidation of cyclohexene in the presence of SO 2 .

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Section: Chemicalsmentioning

confidence: 99%

Photooxidation of cyclohexene in the presence of SO<sub>2</sub>: SOA yield and chemical composition

Liu

Jia

et al. 2017

Atmos. Chem. Phys.

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“…The free radicals produced from the degradation of hydrocarbons can and do react with S0 2 in the gas phase. Both OH and H0 2 oxidize S0 2 to reactive intermediates such as HSO3 and S0 3 (10). These intermediates combine rapidly with water vapor in the atmosphere to form sulfuric acid aerosol.…”

Section: Radical Oxidation Of Sulfur Dioxidementioning

confidence: 99%

Atmospheric Chemistry

Boubel

1994

Fundamentals of Air Pollution

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“…Sander and Seinfeld (1979) and Calvert et al (1978) summarize the possible important mechanisms for photochemical SOz oxidation. Many authors have dealt with the liquid phase oxidation of SO2, and Tables 3-5 of Peterson and Seinfeld (1978) summarize many of these.…”

Section: Droplet)mentioning

confidence: 99%

Calculation of sulfate and nitrate levels in a growing, reacting aerosol

Peterson

Seinfeld

1979

AIChE Journal

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The temporal variation of particle size and chemical composition of a marine aerosol exposed to SO2, NH3, NO, NO2, H2SO4 and H2O vapor is studied to determine the effect of these parameters on the sulfate and nitrate levels in the particle. Results show that, for gas phase SO2 oxidation to sulfate, and liquid phase nitrate formation, those parameters that enhance sulfate formation tend to inhibit nitrate formation, and vice versa. Further, for the situation considered, the ratio predicted for sulfate and nitrate ions to ammonium ions is very nearly that found if all these ions were present in the form of NH4NO3 and (NH4)2SO4. This compares favorably with data on sulfate, nitrate and ammonium levels in the Los Angeles area. The model used is capable of representing a general growing, reacting aerosol; other cases studied by this approach are briefly outlined. Limitations of its use are discussed.

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Mechanism of the homogeneous oxidation of sulfur dioxide in the troposphere

Cited by 261 publications

References 119 publications

Photooxidation of cyclohexene in the presence of SO<sub>2</sub>: SOA yield and chemical composition

Photooxidation of cyclohexene in the presence of SO<sub>2</sub>: SOA yield and chemical composition

Atmospheric Chemistry

Calculation of sulfate and nitrate levels in a growing, reacting aerosol

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Mechanism of the homogeneous oxidation of sulfur dioxide in the troposphere

Cited by 261 publications

References 119 publications

Photooxidation of cyclohexene in the presence of SO&lt;sub&gt;2&lt;/sub&gt;: SOA yield and chemical composition

Photooxidation of cyclohexene in the presence of SO&lt;sub&gt;2&lt;/sub&gt;: SOA yield and chemical composition

Atmospheric Chemistry

Calculation of sulfate and nitrate levels in a growing, reacting aerosol

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Photooxidation of cyclohexene in the presence of SO<sub>2</sub>: SOA yield and chemical composition

Photooxidation of cyclohexene in the presence of SO<sub>2</sub>: SOA yield and chemical composition