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Quantitative Health Risk Assessment of Inhalation Exposure to Polycyclic Aromatic Hydrocarbons on Citizens in Tianjin, China

Abstract

Considering the large amounts of PAHs emitted into the ambient air in China, it is urgent to take preliminary health risk assessment of citizens through inhalation exposure to PAHs in China. The incremental lifetime cancer risk (ILCR) model was used to get the risk level of Tianjin citizens as an example, and Monte Carlo simulation was adopted to deal with the uncertainty. Exposure analysis found that the average values of B[a]P equivalent (B[a]Peq) daily exposure doses for children in the indoor, traffic and outdoor settings were estimated to be 2,446.8, 478.4, and 321.6 ng day−1, respectively. And those for adults were 3,344.1, 794.9, and 519.0 ng day−1, respectively. Much attention must be paid to indoor exposure, as it contributes more than 70% of the B[a]Peq daily exposure dose. ILCR falls within the range of 10−5–10−3, which is higher than the acceptable risk level of 10−6, and lower than the priority risk level (10−3). So this risk should be compared with those of other public health issues in the purpose of risk management. Sensitivity analysis found that the two variables, indoor air PAHs concentration distribution and the cancer slope factor (CSF) of BaP, contribute about 89% of the total risk uncertainty. Thus they are considered as the two main factors influencing the accuracy of the PAHs health risk assessment.

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References

  1. Asante-Duah K (2002) Public health risk assessment for human exposure to chemicals. Kluwer, Netherlands

    Google Scholar 

  2. Brown DG, Knightes CD, Peters CA (1999) Risk assessment for polycyclic aromatic hydrocarbon NAPLs using component fractions. Environ Sci Technol 33:4357–4363. doi:10.1021/es9902423

    Article  CAS  Google Scholar 

  3. Chen S, Liao C (2006) Health risk assessment on human exposed to environmental polycyclic aromatic hydrocarbons pollution sources. Sci Total Environ 366:112–123. doi:10.1016/j.scitotenv.2005.08.047

    Article  CAS  Google Scholar 

  4. Dai SG, Zhang L (1996) The determination and study on characteristic of polycyclic aromatic hydrocarbons in indoor air. Environ Chem 15:138–146. doi:10.1897/1551-5028(1996)015<0138:TABPOA>2.3.CO;2 (in Chinese)

    Article  CAS  Google Scholar 

  5. Hu Y, Bai Z, Zhang L, Wang X, Zhang L, Yu Q, Zhu T (2007) Health risk assessment for traffic policemen exposed to polycyclic aromatic hydrocarbons (PAHs) in Tianjin, China. Sci Total Environ 382:240–250. doi:10.1016/j.scitotenv.2007.04.038

    Article  CAS  Google Scholar 

  6. Kameda Y, Shirai J, Komai T, Nakanishi J, Masunaga S (2005) Atmospheric polycyclic aromatic hydrocarbons: size distribution, estimation of their risk and their depositions to the human respiratory tract. Sci Total Environ 340:71–80. doi:10.1016/j.scitotenv.2004.08.009

    Article  CAS  Google Scholar 

  7. NIEHS (1998) The 8th report on carcinogens: 1998 summary; National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC

  8. Nisbet C, LaGoy P (1992) Toxic equivalency factors (TEFs) for polycyclic aromatic hydrocarbons (PAHs). Reg Toxicol Pharmocol 16:290–300. doi:10.1016/0273-2300(92)90009-X

    Article  CAS  Google Scholar 

  9. Petry T, Schmid P, Schlatter C (1996) The use of toxic equivalency factors in assessing occupational and environmental health risk associated with exposure to airborne mixtures of polycyclic aromatic hydrocarbons (PAHs). Chemosphere 32:639–648. doi:10.1016/0045-6535(95)00348-7

    Article  CAS  Google Scholar 

  10. SEPA (1996) National ambient air quality standard (GB3095-1996). State Environmental Protection Administration of China, SEPA has been upgraded to Ministry of Environmental Protection of China – MEP in 2008

  11. US EPA (1991) Risk assessment guidance for superfund, volume I: human health evaluation manual, supplemental guidance: “Standard default exposure factors” interim final. OSWER Directive 9285.6–03, Washington, DC, March 25, 1991

  12. US EPA (1993) Provisional guidance for quantitative risk assessment of polycyclic aromatic hydrocarbons: EPA/600/R-93/089; Office of research and development, US Environmental Protection Agency: Washington, DC

  13. US EPA (1997) Exposure factors handbook, update to exposure factors handbook, EPA/600/8-89/043-May 1989. EPA/600/P-95/002Fa, August 1997

  14. WHO (1987) Air quality guidelines for Europe, European Series. WHO Regional Bureau, Copenhagen

    Google Scholar 

  15. Wu SP, Tao S, Zhang Y, Lan T, Zuo Q (2005) Distribution of particle-phase hydrocarbons, PAHs and OCPs in Tianjin, China. Atmos Environ 39:7420–7432. doi:10.1016/j.atmosenv.2005.08.031

    Article  CAS  Google Scholar 

  16. Xu S, Liu W, Tao S (2006) Emission of polycyclic aromatic hydrocarbons in China. Environ Sci Technol 40:702–708. doi:10.1021/es0517062

    Article  CAS  Google Scholar 

Download references

Acknowledgments

This study was funded by the National Natural Science Foundation (Grant No. 20307006), two Special Environmental Research Funds for Public Welfare (Grant No. 200709048, Grant No. 200709013).

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Correspondence to Zhipeng Bai.

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Bai, Z., Hu, Y., Yu, H. et al. Quantitative Health Risk Assessment of Inhalation Exposure to Polycyclic Aromatic Hydrocarbons on Citizens in Tianjin, China. Bull Environ Contam Toxicol 83, 151–154 (2009). https://doi.org/10.1007/s00128-009-9686-8

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Keywords

  • PAHs
  • Inhalation exposure
  • Health risk assessment
  • Tianjin