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

• PENG LIN

  Key Lab of Coal Science and Technology, Taiyuan University of Technology Education Ministry and Shanxi Province College of Environment Sciences and Engineering, Nankai University

• YOU YAN

  College of Environment Sciences and Engineering, Nankai University

• BAI ZHIPENG

  College of Environment Sciences and Engineering, Nankai University

• 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‰. δ¹³C values of atmospheric PAHs in Urumchi range from -23.6‰ to -32.1‰ and from -22.5‰ to -31.0‰ in Zhengzhou. δ¹³C 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 ¹³C with increasing molecular weight of PAHs than those in Zhengzhou. δ¹³C 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

  ＧＥＯＣＨＥＭＩＣＡＬ　ＪＯＵＲＮＡＬ 40 (3), 219-226, 2006

  一般社団法人日本地球化学会

キーワード

• carbon isotope
• polycyclic aromatic hydrocarbons
• TSP
• PM10
• China

詳細情報

• CRID: 1390282679526855680
• NII論文ID: 10018144155
• NII書誌ID: AA00654975
• DOI: 10.2343/geochemj.40.219
• COI: 1:CAS:528:DC%2BD28Xot1Clsb8%3D
• ISSN: 18805973
• ISSN: 00167002
• NDL書誌ID: 7948966
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7948966
• 本文言語コード: en
• データソース種別:
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