Gas/particle partitioning of low-molecular-weight dicarboxylic acids at a suburban site in Saitama, Japan

Bao, Linfa; Matsumoto, Mariko; Kubota, Tsutomu; Sekiguchi, Kazuhiko; Wang, Qingyue; Sakamoto, Kazuhiko

doi:10.1016/j.atmosenv.2009.09.014

Cited by 58 publications

(72 citation statements)

References 24 publications

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“…In some studies (Martinelango et al, 2007;Bao et al, 2012), observed concentration of oxalic acid in gas phase range from approximately 10 ng m -3 to close 1 μg m -3…”

Section: Atmospheric Implicationsmentioning

confidence: 99%

“…To obtain actual concentrations of oxalic acid conformers, we assumed a 302 ng m -3 (2.02×10 9 molecule cm -3 ) for total oxalic acid at 298.15 K and altitude of 0 km, which are measured by Bao et al (2012). Combining mole fractions for conformers (cTt, tTt, tCt and cCt) and the total concentration of oxalic acid considering the temperature 5 and pressure effect using idea gas equation (see Table S9), the concentration of oxalic acid conformers involving in the hydration reaction at various altitudes can be calculated, which is tabulated in Table 4.…”

Section: Atmospheric Implicationsmentioning

confidence: 99%

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Understanding the catalytic role of oxalic acid in the SO3 hydration to form H2SO4 in the atmosphere

Lv¹,

Sun²,

Zhang³

et al. 2018

Preprint

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The hydration of SO 3 plays an important role in atmospheric sulfuric acid formation. Some atmospheric species can involve in and facilitate the reaction. In this work, using quantum chemical calculations, we show that oxalic acid, the most common dicarboxylic acid in the atmosphere, can effectively catalyze the hydration of SO 3 . The energy barrier of SO 3 hydration reaction catalyzed by oxalic acid (cTt, tTt, tCt and cCt conformers) is about or below 1 kcal mol -1 , which is lower 15 than the energy barrier of 5.73 kcal mol -1 for water-catalyzed SO 3 hydration. By comparing the rate of SO 3 hydration reaction catalyzed by oxalic acid and water, it can be found that the oxalic acid-catalyzed SO 3 hydration can compete with water-catalyzed SO 3 hydration in the upper troposphere. This leads us to conclude that the involvement of oxalic acid in SO 3 hydration to form H 2 SO 4 is significant in the atmosphere. 20

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“…In some studies (Martinelango et al, 2007;Bao et al, 2012), observed concentration of oxalic acid in gas phase range from approximately 10 ng m -3 to close 1 μg m -3…”

Section: Atmospheric Implicationsmentioning

confidence: 99%

Section: Atmospheric Implicationsmentioning

confidence: 99%

Understanding the catalytic role of oxalic acid in the SO3 hydration to form H2SO4 in the atmosphere

Lv¹,

Sun²,

Zhang³

et al. 2018

Preprint

View full text Add to dashboard Cite

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“…As an individual species, dicarboxylic acids are an important water-soluble group of atmospheric aerosols (Kawamura et al, 1996). Dicarboxylic acids are produced by the secondary photochemical oxidation of organic pollutants (Hatakeyama et al, 1987;Kawamura and Ikushima, 1993;Bao et al, 2009b).…”

Section: Introductionmentioning

confidence: 99%

Determination of Dicarboxylic Acids and Levoglucosan in Fine Particles in the Kanto Plain, Japan, for Source Apportionment of Organic Aerosols

Kumagai

Iijima

Shimoda

et al. 2010

Aerosol Air Qual. Res.

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Fine particles were collected at a suburban site in the inland Kanto plain, Japan, in the spring and winter of 2007, and the summer of 2008. Organic carbon (OC), water-soluble organic carbon (WSOC), elemental carbon (EC), inorganic ions, and water-soluble organic compounds (dicarboxylic acids and levoglucosan) were analyzed. The WSOC/OC ratio was the highest in summer, followed by in spring, suggesting that organic aerosols were influenced by aging. The concentrations of total diacids (C 2 -C 9 ) in spring and summer were higher than in winter. In each season, WSOC showed a strong positive correlation with the total diacids. Levoglucosan, which is recognized as a biomass burning tracer, was observed in a considerably higher concentration in winter than in spring or summer. In winter, WSOC also showed a strong positive correlation with levoglucosan. These results indicate that secondary formation is important as a source of WSOC and OC especially in the warm seasons, although emissions from biomass burning also contribute to WSOC in winter. By using the combination of source profile for biomass burning emission and EC tracer method, OC derived from biomass combustion in winter was calculated to be 47% of OC and OC derived from secondary formation in summer was calculated to be 75% of OC.

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“…This study shows gas-phase hydration to be significant even under relatively dry environmental conditions. This affects the gas-phase/aqueous particle partitioning of MG and could provide insight into the discrepancy between measured and modeled amounts of SOA (29,30).…”

mentioning

confidence: 99%

Gas-phase water-mediated equilibrium between methylglyoxal and its geminal diol

Axson

Takahashi

Haan

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

106

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In aqueous solution, aldehydes, and to a lesser extent ketones, hydrate to form geminal diols. We investigate the hydration of methylglyoxal (MG) in the gas phase, a process not previously considered to occur in water-restricted environments. In this study, we spectroscopically identified methylglyoxal diol (MGD) and obtained the gas-phase partial pressures of MG and MGD. These results, in conjunction with the relative humidity, were used to obtain the equilibrium constant, K P , for the water-mediated hydration of MG in the gas phase. The Gibbs free energy for this process, ΔG°, obtained as a result, suggests a larger than expected gas-phase diol concentration. This may have significant implications for understanding the role of organics in atmospheric chemistry.hydration | equilibrium constant | water clusters

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Gas/particle partitioning of low-molecular-weight dicarboxylic acids at a suburban site in Saitama, Japan

Cited by 58 publications

References 24 publications

Understanding the catalytic role of oxalic acid in the SO<sub>3</sub> hydration to form H<sub>2</sub>SO<sub>4</sub> in the atmosphere

Understanding the catalytic role of oxalic acid in the SO<sub>3</sub> hydration to form H<sub>2</sub>SO<sub>4</sub> in the atmosphere

Determination of Dicarboxylic Acids and Levoglucosan in Fine Particles in the Kanto Plain, Japan, for Source Apportionment of Organic Aerosols

Gas-phase water-mediated equilibrium between methylglyoxal and its geminal diol

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Gas/particle partitioning of low-molecular-weight dicarboxylic acids at a suburban site in Saitama, Japan

Cited by 58 publications

References 24 publications

Understanding the catalytic role of oxalic acid in the SO&lt;sub&gt;3&lt;/sub&gt; hydration to form H&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; in the atmosphere

Understanding the catalytic role of oxalic acid in the SO&lt;sub&gt;3&lt;/sub&gt; hydration to form H&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; in the atmosphere

Determination of Dicarboxylic Acids and Levoglucosan in Fine Particles in the Kanto Plain, Japan, for Source Apportionment of Organic Aerosols

Gas-phase water-mediated equilibrium between methylglyoxal and its geminal diol

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Understanding the catalytic role of oxalic acid in the SO<sub>3</sub> hydration to form H<sub>2</sub>SO<sub>4</sub> in the atmosphere

Understanding the catalytic role of oxalic acid in the SO<sub>3</sub> hydration to form H<sub>2</sub>SO<sub>4</sub> in the atmosphere