This study focused on analyzing the contamination status of groundwater around an oil depot in Fuxin by considering physicochemical indexes, potentially toxic elements (PTEs), and organic substances with reference to relevant standards. The hazard analysis using the Nemero contamination index and potential ecological hazard index method, aimed at determining the levels of PTEs and organic contaminants in the groundwater, revealed a mild ecological risk in the study area. A redundancy analysis-geographic information system employed to uncover the sources of PTEs in groundwater samples revealed two main components: the first comprised Cd, Zn, Mn, and Pb, which were mainly of anthropogenic origin (oil reservoir leakage), and the second component includes Cr, Hg and As, which may originate from anthropogenic and geological sources. Evaluation of the carcinogenic and noncarcinogenic risks associated with PTEs indicated high levels of the former in the study area. Finally, the correlation between organic pollutants and environmental factors and the natural attenuation trend was explored. This exploration aimed to provide a reference for groundwater contamination investigation, formulation for contamination prevention and control strategies in relevant demolition areas, and theoretical guidance and technical support for subsequent analysis and monitoring of field data.

本研究针对阜新某油库周边地下水的污染状况，结合相关标准，从理化指标、潜在有毒元素（PTEs）、有机物质等方面进行分析。采用内梅罗污染指数和潜在生态危害指数法进行危害分析，旨在确定地下水中 PTEs 和有机污染物的水平，结果表明研究区存在轻度生态风险。用于揭示地下水样品中 PTE 来源的冗余分析地理信息系统揭示了两个主要成分：第一个成分包括镉、锌、锰和铅，主要是人为来源（油藏泄漏），第二个成分包括 Cr、Hg 和 As，可能源自人为和地质来源。对与 PTE 相关的致癌和非致癌风险的评估表明，研究区域中前者的水平很高。最后探讨有机污染物与环境因素的相关性及自然衰减趋势。本次探索旨在为相关拆迁区地下水污染调查、制定污染防治策略提供参考，并为后续现场数据分析监测提供理论指导和技术支撑。