College of Environment, Northeast Normal University, Changchun 130024, China; Department of Environment, Institute of Natural Hazards, Northeast Normal University, Changchun 130024, China; Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
College of Environment, Northeast Normal University, Changchun 130024, China; Department of Environment, Institute of Natural Hazards, Northeast Normal University, Changchun 130024, China; Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
Sci Total Environ. 2023 Aug 15;886:163977. doi: 10.1016/j.scitotenv.2023.163977. Epub 2023 May 8.
The environmental risks posed by polycyclic aromatic hydrocarbons (PAHs) and the diversity of their anthropogenic origins make them a global issue. Therefore, it is of utmost significance for protecting the aquatic environment and the growth of neighboring populations to identify their possible origins and ecological risk. Here, we detail the contamination profiles of 15 PAHs found in the East Liao River's surface waters in Jilin Province and use the receptor model Absolute Principal Component Analysis - Multiple Linear Regression (APCS-MLR) and diagnostic ratios method to identify the primary potential sources of pollution. Based on the natural hazard risk formation theory (NHRFT), an ecological risk assessment (ERA) model for PAHs in the East Liao River was developed. The method assesses the ecological risk status of PAHs by integrating the risk quotient (RQ) approach and the DPSIRM (driving force, pressure, state, impact, response, management) conceptual framework. Total concentrations in the surface water body were between 396.42 and 624.06 ng/L, with an average of 436.99 ng/L. The source research revealed that coal, biomass, and traffic emission sources are the most likely PAH contributors to the East Liao River. The ERA found that the majority of the sites' locations of the study were at low risk for PAHs in surface water bodies (30.7 % and 32.2 %, respectively), while only a tiny percentage of sites were at high or very high risk (1.8 % and 13.6 %). The study results provide theoretical support for the East Liao River's ecological, environmental protection, and policy formulation.
多环芳烃 (PAHs) 所构成的环境风险及其人为来源的多样性使它们成为一个全球性问题。因此，确定它们可能的来源和生态风险对于保护水生环境和邻近人群的生长至关重要。在这里，我们详细描述了吉林省东辽河流域地表水中 15 种 PAHs 的污染特征，并使用受体模型绝对主成分分析-多元线性回归 (APCS-MLR) 和诊断比值法来识别主要的潜在污染源。基于自然危害风险形成理论 (NHRFT)，我们建立了东辽河流域 PAHs 的生态风险评估 (ERA) 模型。该方法通过整合风险商 (RQ) 方法和 DPSIRM（驱动力、压力、状态、影响、响应、管理）概念框架来评估 PAHs 的生态风险状况。水体中总浓度在 396.42 至 624.06 ng/L 之间，平均为 436.99 ng/L。来源研究表明，煤炭、生物质和交通排放源是东辽河流域 PAHs 的最可能来源。ERA 发现，研究中大多数地点的地表水 PAHs 风险处于低风险水平（分别为 30.7%和 32.2%），只有一小部分地点处于高风险或极高风险水平（分别为 1.8%和 13.6%）。研究结果为东辽河流域的生态、环境保护和政策制定提供了理论支持。
