DataSheet1_Status assessment and probabilistic health risk modeling of polycyclic aromatic hydrocarbons (PAHs) in surface soil across China.pdf

Polycyclic aromatic hydrocarbon (PAH) accumulation in topsoil is getting particular concern with the rapid development of urbanization and industrialization, while the overall pollution status and related risk posed by PAHs received limited attentions at the national scale. This study conducted an overview of published data on 16 priority control PAHs by USEPA on the related peer-reviewed 207 research papers between 2000 and 2020 in 30 provinces of China. Based on that, the pollution levels, composition status, spatial distribution pattern, ecological risk, and human health risk posed by soil PAHs were evaluated. Monte Carlo simulation was adopted to model the probabilistic health risk and identify the contributor of such risks. Results demonstrated the concentrations of ∑16PAHs in soil varied from “undetected” to 261 μg g−1 with a mean value of 0.63 μg g−1, indicating the obvious accumulation of PAHs in topsoil of most provinces in China compared with the guideline value (0.2 μg g−1). The concentrations of ∑16PAHs in surface soil of China has obvious regional characteristics. Higher concentrations of soil PAHs are mainly distributed in north, northwest, and eastern regions, especially in Xinjiang, Shandong, Jiangsu, Sichuan, and Guangxi Province. Risk assessment indicates potential ecological and human health risk were posed by soil PAHs, therefore, reducing soil PAHs concentration and exposure frequency are the most effective pathways to protect human health. Despite the fact that risks posed by soil PAHs are generally low, concentrations of PAHs in some sites are relatively high. It is necessary to take effective measures to remediate soil PAHs pollution in certain areas to reduce concentration and associated risks.

多环芳烃（PAH）在表层土壤中的累积问题随着城市化与工业化的迅速发展而日益引起广泛关注，然而，相较于全国范围内的整体污染状况及其相关风险，PAHs所引发的问题尚未受到充分重视。本研究对USEPA公布的16种优先控制PAHs的相关已发表数据进行了综述，涉及2000年至2020年间中国30个省份的207篇同行评审研究论文。据此，对土壤PAHs所造成的污染水平、组成状况、空间分布模式、生态风险以及人类健康风险进行了评估。本研究采用了蒙特卡洛模拟方法，对健康风险的概率性进行了建模，并确定了风险的主要贡献者。结果表明，土壤中16种PAHs的总浓度范围从“未检测到”至261 μg g−1，平均值为0.63 μg g−1，与指导值（0.2 μg g−1）相比，表明中国大多数省份的表层土壤中PAHs的积累现象明显。中国表层土壤中16种PAHs的浓度具有明显的区域特征，土壤PAHs的高浓度主要分布在北部、西北部和东部地区，尤其是在新疆、山东、江苏、四川和广西省。风险评估表明，土壤PAHs可能导致潜在的生态和人类健康风险，因此，降低土壤PAHs浓度和暴露频率是保护人类健康最为有效的途径。尽管土壤PAHs所引发的风险总体上较低，但在某些地点，PAHs的浓度相对较高。有必要采取有效措施对特定区域的土壤PAHs污染进行修复，以降低浓度和相关风险。