Ambient measurements and survey of the sources of gaseous glyoxal at suburban site in Tokyo during summer season

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  • Nakashima Yoshihiro
    Department of Environmental Science on Biosphere, Tokyo University of Agriculture and Technology
  • Tsurumaru Hiroshi
    Graduate School of Global Environmental Studies, Kyoto University
  • Sathiyamurthi Ramasamy
    Graduate School of Global Environmental Studies, Kyoto University
  • Sakamoto Yosuke
    Graduate School of Global Environmental Studies, Kyoto University Graduate School of Human and Environmental Studies, Kyoto University Center for Regional Environmental Research, National Institute for Environmental Studies
  • Kato Shungo
    Graduate School of Urban Environmental Science, Tokyo Metropolitan University
  • Sadanaga Yasuhiro
    Graduate School of Engineering, Osaka Prefecture University
  • Nakayama Tomoki
    Institute for Space Earth Environmental Research, Nagoya University
  • Miyazaki Yuzo
    Institute of Low Temperature Science, Hokkaido University
  • Mochiduki Tomoki
    Institute of Low Temperature Science, Hokkaido University
  • Wada Ryuichi
    Faculty of Life and Environmental Sciences, Teikyo University of Science
  • Matsuda Kazuhide
    Department of Environmental Science on Biosphere, Tokyo University of Agriculture and Technology
  • Kajii Yoshizumi
    Graduate School of Global Environmental Studies, Kyoto University Graduate School of Human and Environmental Studies, Kyoto University Center for Regional Environmental Research, National Institute for Environmental Studies

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Other Title
  • 夏季東京都市郊外部におけるガス状グリオキサール濃度測定と発生源の検討
  • カキ トウキョウトシ コウガイブ ニ オケル ガスジョウ グリオキサール ノウド ソクテイ ト ハッセイ ゲン ノ ケントウ

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Abstract

<p>Glyoxal is one of the smallest dicarbonyl compounds existing in both the gas phase and in an aerosol. The primary sources of glyoxal have been known to be the photochemical products of the non-methane hydrocarbons. Since the heterogeneous reactions of glyoxal play an important role in the formation of secondary organic aerosols, the studies of the formation process and sources of glyoxal have been reported. However, the reports for the ambient measurements of glyoxal are limited. In this study, the ambient measurements of gaseous glyoxal by incoherent broad band cavity enhanced absorption spectroscopy (IBBCEAS), a novel technique for the measurements of trace species, were carried out in the field museum of Tama hills (FM Tama) maintained and operated by the Tokyo University of Agriculture and Technology during the summer season, July 31–Aug. 7, 2015. During the measurement periods, the average concentration of gaseous glyoxal was 0.24±0.18 ppbv, comparable to the previous measurements in urban areas. From the correlation with gaseous glyoxal and trace species, it is indicated that the sources of glyoxal around the measurement point were photochemical products.</p>

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