We studied the concentrations, characteristics, ecological risk, and health risk of 12 probably carcinogenic polycyclic aromatic hydrocarbons (PAHs) in KGI soils of Antarctica. Measured concentrations of 12 PAHs ranged from 1.83 to 32.9 ng g⁻¹ with an average of 11.9 ± 8.13 ng g⁻¹. The assessment of ecological risks used methods that were based on total toxicity equivalency concentrations (TEQs) and a risk quotient (RQ), which can be used to sensitively and accurately assess ΣPAHs. The results indicated that PAHs in the soils of KGI presented a low risk level to living organisms in the soil and to plants. The low molecular weight PAHs presented a much greater ecological risk than high molecular weight PAHs in KGI soils, and the levels of these ecological risks were classified as low compared to those of previous studies in other areas. The total values of incremental lifetime cancer risk (ILCR) for children and adults were 2.34 × 10⁻⁸ and 1.73 × 10⁻⁸, respectively. Soil samples from KGI that were contaminated with PAHs still exhibited risks that were much lower than that of the baseline value. The results of this investigation provide a database for contamination evaluation, risk assessment of ecological and human health in PAH-contaminated sites.

我们研究了南极洲 KGI 土壤中 12 种可能致癌的多环芳烃 (PAHs) 的浓度、特征、生态风险和健康风险。12 种多环芳烃的测量浓度范围为 1.83 至 32.9 ng g ^-1，平均值为 11.9 ± 8.13 ng g ^-1. 生态风险评估采用基于总毒性当量浓度 (TEQ) 和风险商 (RQ) 的方法，可用于灵敏、准确地评估 ΣPAHs。结果表明，KGI 土壤中的多环芳烃对土壤中的生物和植物的风险水平较低。凯基土壤中低分子量多环芳烃比高分子量多环芳烃具有更大的生态风险，与之前其他地区的研究相比，这些生态风险水平被归类为低。儿童和成人终生癌症风险增量 (ILCR) 的总值分别为 2.34 × 10 ^-8和 1.73 × 10 ^-8， 分别。来自 KGI 被 PAH 污染的土壤样本仍然表现出远低于基线值的风险。本次调查的结果为多环芳烃污染场地的污染评价、生态和人类健康风险评估提供了一个数据库。