Shuo Zhang1,2, Shu-Chuan Peng1, Tian-Hu Chen1, Ji-Zhong Wang 1

  • 1 School of Resources & Environmental Engineering, Hefei University of Technology, Anhui Province, 23009, China
  • 2 Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, China

Received: July 1, 2015
Revised: August 24, 2015
Accepted: August 26, 2015
Download Citation: ||  

  • Download: PDF

Cite this article:
Zhang, S., Peng, S.C., Chen, T.H. and Wang, J.Z. (2015). Evaluation of Inhalation Exposure to Carcinogenic PM10-Bound PAHs of People at Night Markets of an Urban Area in a Metropolis in Eastern China. Aerosol Air Qual. Res. 15: 1944-1954.


  • PAHs in PM10 at night markets are predominantly from cooking and traffic sources.
  • PAHs appeared to depend on gas/particle partitioning processes and emission sources.
  • The exposure risk for people with more than 3 years of service was > 10–6, but < 10–4.
  • Maximum consumption time should be < 1 hour for the consumers under 25 years old.



Inhalable particle bounded carcinogenic polycyclic aromatic hydrocarbons (PAHs) pose high health risks to both food service workers and consumers cooking or purchasing late night snacks, respectively, in night markets because PAHs are generated in abundance during thermal cooking processes such as barbecue grilling. In the present study, sixteen carcinogenic PAHs in PM10 collected during open hours from eight night markets in an urban area of a metropolis in eastern China were determined. The total concentration of PAHs (ΣPAH) ranged from 145 to 1340 ng m–3, with an arithmetic mean of 828 ± 360 ng m–3. Five- and six-ringed PAHs were predominant in the composition, implying a combination of sources including cooking and traffic. Low coefficient of divergence values for individual PAH homologous among all sampling sites indicated similar sources. The occurrence of PM10-bound PAHs appeared to depend on the gas-particle partitioning processes and emission sources according to the results of principal component analysis (PCA). The daily inhalation rate of particle and predicted gaseous benzo[a]pyrene (BaP)-equivalent adjusted PAHs (BaPeq) for the workers due to occupational exposure was 0.451–3.43 µg day–1. Correspondingly, the occupational exposure risk for workers with one year of service was less than the acceptable risk level (10–6). However, the risk for people who had worked for more than 3 years exceeded 10–6 but was less than the priority risk level (10–4). For consumers, the maximum consumption time (tmax) for each time under the acceptable risk level would increase with an increase in age, and the exposure risk for infants, toddlers and children is high when PM10-bound PAHs are inhaled. We recommend that tmax should be less than 1 hour for consumers under 25 years old. Therefore, our results indicate that both workers and consumers in the night markets have high cancer risks due to inhalation of PM10-bound PAHs.

Keywords: Polycyclic aromatic hydrocarbons (PAHs); PM10; Exposure risk; Night markets

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.