Abstract：
The aims of the present research were to evaluate the health risk of long-term exposure to polycyclic aromatic hydrocarbons (PAHs) concerning the human, ecotoxicological risk for marine biota, and identify their possible sources. Surface sediment bioassay samples were collected from 15 stations of tourist beaches surrounding Bushehr City and analyzed using high performance liquid chromatography (HPLC). The results indicated the concentrations of ∑PAH ranged from 193.5 to 725.5 ng g-1 with mean value of 351.1 ± 155.2 ng g-1, which could be considered as moderate level of pollution. Measured levels of PAH in sediments were compared with sediment quality guidelines (SQGs), indicating low to medium ecotoxicological risk on marine organisms. Moreover, mean ERM quotient (M-ERM-Q) and mean PEL quotient (M-PEL-Q) were implemented, demonstrating potentially biological adverse effects. A preliminary evaluation of human health risk using incremental lifetime cancer risk (ILCR) and toxic equivalent quotient (TEQcarc) indicated that PAH-contaminated sediment in some stations of touristic beaches of Bushehr City would induce potential carcinogenic effects especially for children. Composition and diagnostic analysis indicated that PAHs originated from both pyrogenic and petrogenic, with higher portion of incomplete combustion PAHs.
摘要：
本研究的目的是评估长期接触多环芳烃（PAHs）的健康风险，海洋生物的生态毒理学风险，并确定其可能的来源。从布什尔市周围的15个旅游海滩站收集了表面沉积物生物测定样品，并使用高效液相色谱（HPLC）进行了分析。结果表明，∑PAH的浓度范围为193.5至725.5ngg-1，平均值为351.1±155.2ngg-1，可视为中度污染。将沉积物中PAH的实测水平与沉积物质量指南（SQG）进行了比较，表明海洋生物的低到中等生态毒理学风险。此外，采用平均ERM商(M-ERM-Q)和平均PEL商(M-PEL-Q)，显示潜在的生物不良影响。使用终生癌症风险增量（ILCR）和毒性当量商（TEQcarc）对人类健康风险进行的初步评估表明，布什尔市旅游海滩某些站点中PAH污染的沉积物会引起潜在的致癌作用，尤其是对儿童而言。组成和诊断分析表明，PAHs起源于热原和岩原，不完全燃烧多环芳烃的比例较高。
