Stable carbon isotope evidence for origin of atmospheric polycyclic aromatic hydrocarbons in Zhengzhou and Urumchi, China

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著者

    • Peng Lin PENG LIN
    • Key Lab of Coal Science and Technology, Taiyuan University of Technology Education Ministry and Shanxi Province
    • ZHU TAN
    • College of Environment Sciences and Engineering, Nankai University
    • XIE KECHANG
    • Key Lab of Coal Science and Technology, Taiyuan University of Technology Education Ministry and Shanxi Province
    • FENG YIN-CHANG
    • College of Environment Sciences and Engineering, Nankai University
    • LI ZHIYONG
    • College of Environment Sciences and Engineering, Nankai University

抄録

Origins of atmospheric polycyclic aromatic hydrocarbons (PAHs) in total suspended particulate (TSP) and particulate matter below 10 micrometers in diameter (PM10) collected in the urban areas of Urumchi and Zhengzhou, China, are discussed on the basis of carbon isotopic compositions of individual compounds. Carbon isotope ratios were measured with the system of GC-C-IRMS with an error (1σ) of less than 0.6‰. δ<sup>13</sup>C values of atmospheric PAHs in Urumchi range from -23.6‰ to -32.1‰ and from -22.5‰ to -31.0‰ in Zhengzhou. δ<sup>13</sup>C values of low-weight molecules (pyrene, fluoranthene, benzo[e]pyrene etc.) in PAHs from the two cities are concordant, and range from -23.0‰∼-25.8‰. However, the high-weight individual compounds of atmospheric PAHs in Urumchi are more depleted in <sup>13</sup>C with increasing molecular weight of PAHs than those in Zhengzhou. δ<sup>13</sup>C mean values of benzo[a]pyrene, indeno(1,2,3-cd)pyrene and benzo(ghi)perylene in Urumchi are -28.3‰, -31.5‰ and -29.7‰, respectively. The values of those three compounds in Zhengzhou, however, are -24.5‰, -29.4‰ and -26.3‰, respectively. Our data, incorporated with the analysis of the consumption of coal and amount of motor vehicles, indicate that PAHs are mainly contributed by coal combustion in the two cities, and the contribution of automobile exhaust to PAHs in Zhengzhou is larger than that in Urumchi during the sampling period.

収録刊行物

  • Geochemical journal : journal of the Geochemical Society of Japan  

    Geochemical journal : journal of the Geochemical Society of Japan 40(3), 219-226, 2006-06-01 

    GEOCHEMICAL SOCIETY OF JAPAN

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各種コード

  • NII論文ID(NAID)
    10018144155
  • NII書誌ID(NCID)
    AA00654975
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00167002
  • NDL 記事登録ID
    7948966
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z53-R488
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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