Department of Civil and Environmental Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
J Hazard Mater. 2010 Jul 15;179(1-3):1128-35. doi: 10.1016/j.jhazmat.2010.03.124. Epub 2010 Apr 7.
Human health risk assessments for petroleum, oil, and lubricant (POL)-contaminated sites are more complicated than for sites contaminated by single compounds due to the complex composition and various analytical methods associated with total petroleum hydrocarbons (TPH). Although several TPH fractionation methods are commonly used, including that of the TPH Criteria Working Group (TPHCWG), an efficient and economical human health risk assessment method is not yet available. To address this concern, a new modified fractionation strategy is recommended in this study, which resolves the problems of the current TPH fractionation methods while retaining reliability in the results. For the purpose of this study, the distribution characteristics of the 13 TPHCWG fractions were examined, and human health risk assessments for the POL-contaminated sites were performed. The results show that aliphatic EC8-16 and aromatic EC10-21 among the 13 TPH fractions are major contributors to human health risks along all exposure routes, making up approximately 96% of the hazard index (HI) of the TPH fractions, on average. Therefore, it is reasonable to concentrate on aliphatic EC8-16 and aromatic EC10-21 fractions, rather than to study all of the TPH fractions, in evaluating human health risk for TPH-contaminated sites.
人体健康风险评估对于石油、油和润滑剂（POL）污染场地比单一化合物污染场地更为复杂，因为总石油烃（TPH）与复杂的组成和各种分析方法有关。尽管有几种 TPH 分级方法被广泛使用，包括 TPH 标准工作组（TPHCWG）的方法，但仍缺乏一种有效且经济的人体健康风险评估方法。为了解决这一问题，本研究建议采用一种新的改良分级策略，该策略在保留结果可靠性的同时解决了当前 TPH 分级方法存在的问题。在本研究中，考察了 13 种 TPHCWG 分级的分布特征，并对 POL 污染场地进行了人体健康风险评估。结果表明，在 13 种 TPH 分级中，脂肪族 EC8-16 和芳香族 EC10-21 是所有暴露途径下人体健康风险的主要贡献者，平均占 TPH 分级危害指数（HI）的约 96%。因此，在评估 TPH 污染场地的人体健康风险时，集中研究脂肪族 EC8-16 和芳香族 EC10-21 分级，而不是研究所有 TPH 分级是合理的。
