Department of Environmental Science, Suan Sunandha Rajabhat University, Bangkok, Thailand.
School of Social & Environmental Development, National Institute of Development Administration (NIDA), Bangkok, Thailand.
Mar Pollut Bull. 2020 Jan;150:110736. doi: 10.1016/j.marpolbul.2019.110736. Epub 2019 Nov 21.
Health risks of human exposures to 12 Polycyclic aromatic hydrocarbons (PAHs) in coastal soils of Koh Samed Island (KSI), Thailand, were evaluated after the coastal areas were cleaned up of the 2013 oil-spill contamination. The risk assessment quantified both total cancer and non-cancer risks for four groups of receptors using average PAHs concentrations. Two exposure pathways (incidental ingestion and dermal contact) were selected to evaluate the risks, and three methods were used to calculate the total cancer risks to determine an appropriate assessment method. The non-cancer risk was represented by the total Hazard Index (HI). The contributions of each PAH to the total cancer risk and total HI were also investigated. The total cancer risk (3.53×10 to 9.12×10) and total HI (4.35×10) from this work were relatively lower than the USEPA baselines (10 for the cancer risk and 1 for the HI) and were quite low when compared with other works in the literature. Benzo(a)pyrene made the highest contribution to the total cancer risk (61.82%), while benzo[g,h,i]perylene made the highest contribution to the total HI (62.41%). In regard to the contributions of the two exposure routes, dermal contact contributed the most to the total cancer risk, while incidental ingestion contributed the most to the total HI.
对泰国萨迈德岛（Koh Samed Island，KSI）沿海地区进行了清理，以清除 2013 年的石油泄漏污染。在进行清理后，评估了人类接触科沙美岛沿海土壤中的 12 种多环芳烃（PAHs）的健康风险。风险评估使用平均 PAHs 浓度量化了四类受体的总癌症风险和非癌症风险。选择了两种暴露途径（偶然摄入和皮肤接触）来评估风险，并使用三种方法来计算总癌症风险，以确定合适的评估方法。非癌症风险由总危害指数（HI）表示。还研究了每种 PAH 对总癌症风险和总 HI 的贡献。本研究的总癌症风险（3.53×10 到 9.12×10）和总 HI（4.35×10）相对低于美国环保署的基准值（癌症风险为 10，HI 为 1），与文献中的其他研究相比也很低。苯并（a）芘对总癌症风险的贡献最大（61.82%），而苯并[g，h，i]苝对总 HI 的贡献最大（62.41%）。就两种暴露途径的贡献而言，皮肤接触对总癌症风险的贡献最大，而偶然摄入对总 HI 的贡献最大。
