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Mkoma, Stelyus L.; Kawamura, Kimitaka; Tachibana, Eri (2014)
Publisher: Tellus B
Journal: Tellus B
Languages: English
Types: Article
Subjects: Tanzania, Meteorology. Climatology, glyoxal, glyoxylic acid, East Africa, diacids, QC851-999, stable carbon isotope ratios, Atmospheric chemistry, PM2.5 and PM10, organic aerosols, PM2.5 and PM10; Stable carbon isotope ratios; Oxalic acid, Diacids, Glyoxylic acid, Glyoxal, Organic aerosols, Tanzania, East Africa, oxalic acid
Tropical aerosols of PM2.5 and PM10 were collected at a rural site in Morogoro, Tanzania (East Africa), and analysed for stable carbon isotopic composition (δ13C) of dicarboxylic acids (C2–C9), glyoxylic acid (ωC2) and glyoxal (Gly) using gas chromatography/isotope ratio mass spectrometer. PM2.5 samples showed that δ13C of oxalic (C2) acid are largest (mean, −18.3±1.7‰) followed by malonic (C3, −19.6±1.0‰) and succinic (C4, −21.8±2.2‰) acids, whereas those in PM10 are a little smaller: −19.9±3.1‰ (C2), −20.2±2.7‰ (C3) and −23.3±3.2‰ (C4). The δ13C of C2–C4 diacids showed a decreasing trend with an increase in carbon numbers. The higher δ13C values of oxalic acid can be explained by isotopic enrichment of 13C in the remaining C2 due to the atmospheric decomposition of oxalic acid or its precursors. δ13C of ωC2 and Gly that are precursors of oxalic acid also showed larger values (mean, −22.5‰ and −20.2‰, respectively) in PM2.5 than those (−26.7‰ and −23.7‰) in PM10. The δ13C values of ωC2 and Gly are smaller than those of C2 in both PM2.5 and PM10. On the other hand, azelaic acid (C9; mean, −28.5‰) is more depleted in 13C, which is consistent with the previous knowledge; that is, C9 is produced by the oxidation of unsaturated fatty acids emitted from terrestrial higher plants. A significant enrichment of 13C in oxalic acid together with its negative correlations with relative abundance of C2 in total diacids and ratios of water-soluble organic carbon and organic carbon further support that a photochemical degradation of oxalic acid occurs during long-range transport from source regions.Keywords: PM2.5 and PM10, stable carbon isotope ratios, oxalic acid, diacids, glyoxylic acid, glyoxal, organic aerosols, Tanzania, East Africa(Published: 1 October 2014)Citation: Tellus B 2014, 66, 23702, http://dx.doi.org/10.3402/tellusb.v66.23702
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    • Aggarwal, S. G. and Kawamura, K. 2008. Molecular distributions and stable carbon isotopic compositions of dicarboxylic acids and related compounds in aerosols from Sapporo, Japan: implications for photochemical aging during long-range atmospheric transport. J. Geophys. Res. 113, D14301. DOI: 10.1029/ 2007JD009365.
    • Anderson, R. S., Iannone, R., Thompson, A. E., Rudolph, J. and Huang, L. 2004. Carbon kinetic isotope effects in the gas-phase reactions of aromatic hydrocarbons with the OH radical at 29694 K. Geophys. Res. Lett. 31, L15108. DOI: 10.1029/ 2004GL020089.
    • Draxler, R. R. and Rolph, G. D. 2012. HYSPLIT (HYbrid SingleParticle Lagrangian Integrated Trajectory) Model Access via NOAA ARL READY Website (http://ready.arl.noaa.gov/HYSPLIT. php). NOAA Air Resources Laboratory, Silver Spring, MD.
    • Ervens, B., Feingold, G., Frost, G. J. and Kreidenweis, S. M. 2004. A modelling study of aqueous production of dicarboxylic acids: 1. Chemical pathways and speciated organic mass production. J. Geophys. Res. 109, D15205. DOI: 10.1029/2003JD004387.
    • Fang, J., Kawamura, K., Ishimura, Y. and Matsumoto, K. 2002. Carbon isotopic composition of fatty acids in the marine aerosols from the western North Pacific: implication for the source and atmospheric transport. Environ. Sci. Technol. 36, 2598 2604.
    • Fisseha, R., Dommen, J., Sax, M., Paulsen, D., Kalberer, M. and co-authors. 2004. Identification of organic acids in secondary organic aerosol and the corresponding gas phase from chamber experiments. Anal. Chem. 76, 6535 6540.
    • Irei, S., Huang, L., Collin, F., Zhang, W., Hastie, D. and coauthors. 2006. Flow reactor studies of the stable carbon isotope composition of secondary particulate organic matter generated by OH-radical-induced reactions of toluene. Atmos. Environ. 40, 5858 5867.
    • Kassim, S. M. 2006. Sustainability of Private Sector in Solid Waste Collection-A Case of Dar es Salaam, Tanzania. PhD Thesis, Civil and Building Engineering, WEDC, Loughborough University, United Kingdom, pp. 347.
    • Kawamura, K. and Ikushima, K. 1993. Seasonal changes in the distribution of dicarboxylic acids in the urban atmosphere. Environ. Sci. Technol. 27, 2227 2235.
    • Kawamura, K. and Kaplan, I. R. 1987. Motor exhaust emission as a primary source of dicarboxylic acids in Los Angeles ambient air. Environ. Sci. Technol. 21, 105 110.
    • Kawamura, K., Kasukabe, H. and Barrie, L. A. 1996. Source and reaction pathways of dicarboxylic acids, ketoacids and dicarbonyls in arctic aerosols: one year of observations. Atmos. Environ. 30, 1709 1722.
    • and off coasts of East Asia: continental outflow of organic aerosols during the ACE-Asia campaign. J. Geophys. Res. 108(D23), 8638. DOI: 10.1029/2002JD003249.
    • Narukawa, M., Kawamura, K., Takeuchi, N. and Nakajima, T. 1999. Distribution of dicarboxylic acids and carbon isotopic compositions in aerosols from 1997 Indonesian forest fires. Geophys. Res. Lett. 26(20), 3101 3104.
    • Pavuluri, C. M., Kawamura, K., Swaminathan, T. and Tachibana, E. 2011. Stable carbon isotopic compositions of total carbon, dicarboxylic acids and glyoxylic acid in the tropical Indian aerosols: implications for sources and photochemical processing of organic aerosols. J. Geophys. Res. 116, D18307. DOI: 10.1029/2011JD015617.
    • Saxena, P. and Hildemann, L. M. 1996. Water-soluble organics in atmospheric particles: a critical review of the literature and application of thermodynamics to identify candidate compounds. J. Atmos. Chem. 24, 57 109.
    • Schmidt, T. C., Zwank, L., Elsner, M., Berg, M., Meckenstock, R. U. and co-authors. 2004. Compound-specific stable isotope analysis of organic contaminants in natural environments: a critical review of the state of the art, prospects, and future challenges. Anal. Bioanal. Chem. 378, 283 300.
    • Sempe´ re´ , R. and Kawamura, K. 2003. Trans-hemispheric contribution of C2-C10 a, v-dicarboxylic acids and related polar compounds to water-soluble organic carbon in the western Pacific aerosols in relation to photochemical oxidation reactions. Global Biogeochem. Cycles. 17, 1069. DOI: 10.1029/2002GB001980.
    • Shilling, J. E., King, S. M., Mochida, M., Worsnop, D. R. and Martin, S. T. 2007. Mass spectral evidence that small changes in composition caused by oxidative aging processes alter aerosol CCN properties. J. Phys. Chem. A. 111, 3358 3368.
    • Simoneit, B. R. T., Medeiros, P. M. and Didyk, B. M. 2005. Combustion products of plastics for refuse burning in the atmosphere. Environ. Sci. Technol. 39, 6961 6970.
    • Sun, J. and Ariya, P. A. 2006. Atmospheric organic and bioaerosols as cloud condensation nuclei (CCN): a review. Atmos. Environ. 40, 795 820.
    • Wang, H. and Kawamura, K. 2006. Stable carbon isotopic composition of low-molecular-weight dicarboxylic acids and ketoacids in remote marine aerosols. J. Geophys. Res. 111, D07304. DOI: 10.1029/2005JD006466.
    • Wang, H., Kawamura, K. and Shooter, D. 2005. Carbonaceous and ionic components in wintertime atmospheric aerosols from two New Zealand cities: implications for solid fuel combustion. Atmos. Environ. 39, 5865 5875.
    • Wang, H., Kawamura, K. and Yamazaki, K. 2006. Water-soluble dicarboxylic acids, ketoacids and dicarbonyls in the atmospheric aerosols over the Southern Ocean and Western Pacific Ocean. J. Atmos. Chem. 53, 43 61.
    • Yang, H., Xu, J., Wu, W.-S., Wan, C. H. and Yu, J. Z. 2004. Chemical characterization of water-soluble organic aerosols at Jeju Island collected during ACE-Asia. Environ. Chem. 1, 13 17.
    • Yassaa, N., Meklati, B. Y., Cecinato, A. and Marino, F. 2001. Organic aerosols in urban and waste landfill of Algiers metropolitan area: occurrence and sources. Environ. Sci. Technol. 35, 306 311.
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