ISSN 0253-2778

CN 34-1054/N

Open AccessOpen Access JUSTC Original Paper

Pollution characteristics and health risk assessment of volatile organic compounds in Hefei urban area

Cite this:
https://doi.org/10.3969/j.issn.0253-2778.2018.03.005
  • Received Date: 20 April 2017
  • Rev Recd Date: 04 December 2017
  • Publish Date: 31 March 2018
  • The ambient VOCs were monitored in the urban area of Hefei city during four seasons in 2016. They were analyzed using an off-line analysis method of SUMMA cannister sampling and gas chromatography-mass spectrometer(GC-MS). The VOCs results show that 48 VOCs are identified in the air samples including alkane, arene, halohydrocarbon, etc. The annual mean concentration of total VOCs (TVOCs) is 15.61×10-9, the largest one reaching 47.64×10-9. The seasonal variation of TVOCs in this area is obvious, and the order is winter>spring>autumn>summer; the daily mean concentration of TVOCs shows a trend of concentrations being higher in the morning and in the evening, and lower at noontime. Non-carcinogenic risk indexes of VOCs are below 1, which would not cause non-carcinogenic health hazards to exposed populations. However,the cancer risk index exposed to carcinogenic VOCs is higher than the suggested value of USEPA(U. S. Environmental Protection Agency)( 1×10-6 ), which could indicate a relatively higher cancer risk.
    The ambient VOCs were monitored in the urban area of Hefei city during four seasons in 2016. They were analyzed using an off-line analysis method of SUMMA cannister sampling and gas chromatography-mass spectrometer(GC-MS). The VOCs results show that 48 VOCs are identified in the air samples including alkane, arene, halohydrocarbon, etc. The annual mean concentration of total VOCs (TVOCs) is 15.61×10-9, the largest one reaching 47.64×10-9. The seasonal variation of TVOCs in this area is obvious, and the order is winter>spring>autumn>summer; the daily mean concentration of TVOCs shows a trend of concentrations being higher in the morning and in the evening, and lower at noontime. Non-carcinogenic risk indexes of VOCs are below 1, which would not cause non-carcinogenic health hazards to exposed populations. However,the cancer risk index exposed to carcinogenic VOCs is higher than the suggested value of USEPA(U. S. Environmental Protection Agency)( 1×10-6 ), which could indicate a relatively higher cancer risk.
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