大気・雨水中過酸化水素及び有機過酸化物の定量と動態解析  [in Japanese] Measurement and behavior analysis of hydrogen peroxide and organic peroxides in the atmosphere and rainwater  [in Japanese]

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Author(s)

    • 黄 松南 HUANG Song-nan
    • 京都工芸繊維大学大学院工芸科学研究科物質工学専攻 Department of Chemistry and Material Technology, Kyoto Institute of Technology
    • 布施 泰朗 FUSE Yasuro
    • 京都工芸繊維大学環境科学センター Center for Environmental Science, Kyoto Institute of Technology
    • 山田 悦 YAMADA Etsu
    • 京都工芸繊維大学大学院工芸科学研究科物質工学専攻 Department of Chemistry and Material Technology, Kyoto Institute of Technology

Abstract

大気及び雨水中過酸化水素と有機過酸化物の定量法を開発し,これらの環境での動態及び森林生態系への影響を検討した.大気中過酸化水素は0.18~6.96 ppbvの濃度範囲で,夏に高く,冬に低いという季節変化を示した.大気中有機過酸化物は,主にmethylhydroperoxide(MHP)が6~9月にのみ検出され,濃度範囲0.07~0.29 ppbvであった.大気中有機過酸化物濃度は,過酸化水素と同様に温度と正の相関があり,気温25℃ 付近で増加した.一方,大気中有機過酸化物濃度は過酸化水素とは異なり湿度と正の相関を示し,オゾン濃度とも正の相関を示したが,日射量,紫外線量とは明確な関係は認められなかった.雨水中過酸化水素濃度は6~8月に50 μMを超える場合もあった.雨水中有機過酸化物はhydroxymethylhydroperoxideとMHPが夏季の6~8月にのみ検出され,その濃度は2 μM以下の低い値であった.<br>

The measurement of hydrogen peroxide and organic peroxides in the atmosphere and rainwater was developed, and the behavior of these peroxides affecting forests was investigated. The seasonal variation of atmospheric H<sub>2</sub>O<sub>2</sub> in Kyoto (0.18∼6.96 ppbv) showed a summer maximum and a winter minimum. Methylhydroperoxide (MHP) was mainly detected in the atmosphere with a level of 0.07∼0.29 ppbv during June and September. Organic peroxides in the atmosphere increased above <i>ca.</i>25°C, and correlated with the O<sub>3</sub> concentration and relative humidity, while atmospheric H<sub>2</sub>O<sub>2</sub> was inversely correlated with the relative humidity. They were not related to solar radiation and UV radiation. The H<sub>2</sub>O<sub>2</sub> concentration in rainwater was higher than 50 μM in the summer. Hydroxymethylhydroperoxide (HMHP) and MHP as organic peroxides were detected in rainwater with low concentrations of less than 2 μM during June and August.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 53(9), 875-881, 2004-09-05

    The Japan Society for Analytical Chemistry

References:  20

Cited by:  1

Codes

  • NII Article ID (NAID)
    110002905442
  • NII NACSIS-CAT ID (NCID)
    AN00222633
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    05251931
  • NDL Article ID
    7093674
  • NDL Source Classification
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL Call No.
    Z17-9
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE  NDL-Digital 
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