Cancer risk assessments of Hong Kong soils contaminated by polycyclic aromatic hydrocarbons

Yu Bon MAN, Yuan KANG, Hong Sheng WANG, Winifred LAU, Hui LI, Xiaolin SUN, John P. GLESY, Ka Lai CHOW, Ming Hung WONG

Research output: Contribution to journalArticles

103 Citations (Scopus)

Abstract

The aim of this study was to evaluate soils from 12 different land use types on human cancer risks, with the main focus being on human cancer risks related to polycyclic aromatic hydrocarbons (PAHs). Fifty-five locations were selected to represent 12 different types of land use (electronic waste dismantling workshop (EW (DW)); open burning site (OBS); car dismantling workshop (CDW) etc.). The total concentrations of 16 PAHs in terms of total burden and their bioaccessibility were analysed using GC/MS. The PAHs concentrations were subsequently used to establish cancer risks in humans via three exposure pathways, namely, accident ingestion of soil, dermal contact soil and inhalation of soil particles. When the 95th centile values of total PAH concentrations were used to derive ingestion and dermal cancer risk probabilities on humans, the CDW land use type indicated a moderate potential for cancerous development (244 × 10−6 and 209 × 10−6, respectively). Bioaccessible PAHs content in soil samples from CDW (3.60 × 10−6) were also classified as low cancer risk. CDW soil possessed a higher carcinogenic risk based on PAH concentrations. Bioremediation is recommended to treat the contaminated soil. Copyright © 2013 Elsevier B.V. Published by Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)770-776
JournalJournal of Hazardous Materials
Volume261
Early online dateFeb 2013
DOIs
Publication statusPublished - Oct 2013

Citation

Man, Y. B., Kang, Y., Wang, H. S., Lau, W., Li, H., Sun, X. L., . . . Wong, M. H. (2013). Cancer risk assessments of Hong Kong soils contaminated by polycyclic aromatic hydrocarbons. Journal of Hazardous Materials, 261, 770-776. doi: 10.1016/j.jhazmat.2012.11.067

Keywords

  • Car dismantling workshop
  • Open burning
  • Farm soil
  • Lifetime cancer risk
  • Bioaccessible PAHs

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