2017 Volume 11 Issue 9
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LIU Li, HU Hui, LI Xian, HUANG Huanyan, CAI Xunjiang, TAN Xiaohui, CHEN Tao. Pollution characteristics and source apportionment of PAHs and n-alkane in PM10, PM2.5 and PM1 in Dongguan city, China[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5138-5151. doi: 10.12030/j.cjee.201609242
Citation: LIU Li, HU Hui, LI Xian, HUANG Huanyan, CAI Xunjiang, TAN Xiaohui, CHEN Tao. Pollution characteristics and source apportionment of PAHs and n-alkane in PM10, PM2.5 and PM1 in Dongguan city, China[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5138-5151. doi: 10.12030/j.cjee.201609242
shu

Pollution characteristics and source apportionment of PAHs and n-alkane in PM10, PM2.5 and PM1 in Dongguan city, China

  • 1.

    Sinosteel Tiancheng Environmental Protection Science & Technology Co. Ltd., Wuahn 430205, China

  • 2.

    School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

  • 3.

    Dongguan Environmental Protection Bureau, Dongguan 523000, China

  • 4.

    Dongguan Institute of Environmental Science, Dongguan 523000, China

  • 5.

    Dongguan Environmental Monitoring Centre Station, Dongguan 523000, China

  • Received Date: 05/12/2016
    Accepted Date: 29/09/2016
    Available Online: 26/08/2017
    Fund Project:
  • The samples of PM10, PM2.5 and PM1 had been collected respectively at the NC site of residential area and the ZT site of industrial area in Dongguan city between August, 2011 and July, 2012.The polycyclic aromatic hydrocarbons (PAHs) and n-alkane in different particles were tested and analyzed. The particle size distribution indicated the highest enrichment of PAHs and n-alkane in PM1as well as the higher enrichment of n-alkane than PAHs. An analysis of the ring numbers of PAHs showed that the ring number of the predominant PAHs was six in PM1 and four in PM1~2.5 and PM2.5~10. The method of diagnostic ratios of PAHs was used to investigate the sources of PAHs. The results showed that the main sources of PAHs at the NC site were gasoline exhaust, natural gas burning, coal combustion and cooking source. The major sources at the ZT site were diesel exhaust, coal combustion and wood burning. The source apportionment of n-alkane was performed using the methods of carbon maximum number (Cmax), carbon preference index (CPI) and percentage wax n-alkane (Wwax). The research findings showed that fossil fuel combustions were the most important contributor to the production of n-alkane in the particulate matter in Dongguan city.The wax discharge from higher plants was in the second place, with the contribution percentage being between 10.9% and 28.9%.The contribution percentage of fossil fuel combustions to n-alkane in PM1 was higher than that in PM1~2.5 and PM2.5~10.
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Pollution characteristics and source apportionment of PAHs and n-alkane in PM10, PM2.5 and PM1 in Dongguan city, China

  • Received Date: 05/12/2016
  • Accepted Date: 29/09/2016
  • Available Online: 26/08/2017
Fund Project:

Abstract: The samples of PM10, PM2.5 and PM1 had been collected respectively at the NC site of residential area and the ZT site of industrial area in Dongguan city between August, 2011 and July, 2012.The polycyclic aromatic hydrocarbons (PAHs) and n-alkane in different particles were tested and analyzed. The particle size distribution indicated the highest enrichment of PAHs and n-alkane in PM1as well as the higher enrichment of n-alkane than PAHs. An analysis of the ring numbers of PAHs showed that the ring number of the predominant PAHs was six in PM1 and four in PM1~2.5 and PM2.5~10. The method of diagnostic ratios of PAHs was used to investigate the sources of PAHs. The results showed that the main sources of PAHs at the NC site were gasoline exhaust, natural gas burning, coal combustion and cooking source. The major sources at the ZT site were diesel exhaust, coal combustion and wood burning. The source apportionment of n-alkane was performed using the methods of carbon maximum number (Cmax), carbon preference index (CPI) and percentage wax n-alkane (Wwax). The research findings showed that fossil fuel combustions were the most important contributor to the production of n-alkane in the particulate matter in Dongguan city.The wax discharge from higher plants was in the second place, with the contribution percentage being between 10.9% and 28.9%.The contribution percentage of fossil fuel combustions to n-alkane in PM1 was higher than that in PM1~2.5 and PM2.5~10.

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