Spatial distribution, composition, and source analysis of petroleum pollutants in soil from the Changqing Oilfield, Northwest China.
Spatial distribution, composition, and source analysis of petroleum pollutants in soil from the Changqing Oilfield, Northwest China.
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DOI：
10.1016/j.marpolbul.2022.114338
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发表时间：
2022-11
影响因子：
5.8
通讯作者：
Long-miao Yuan;Yingqin Wu;Q. Fan;Ping Li;Jianjun Liang;Zhiyu Wang;Rui-Yan Li;Leiping Shi
中科院分区：
文献类型：
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作者：
Long-miao Yuan;Yingqin Wu;Q. Fan;Ping Li;Jianjun Liang;Zhiyu Wang;Rui-Yan Li;Leiping Shi
油田周围的石油污染引起了更多的关注。然而，长庆油田土壤中石油类的含量、分布和来源仍存在很多未知因素，这对当地环境保护具有重要意义。针对长琼油田土壤污染问题进行了调查。总石油烃（TPHs），正构烷烃（TNAs）和多环芳烃（PAHs）的最大浓度分别为1960.29，96.13和0.82毫克/公斤。TPHs在研究区北部高于南部。土壤总烃在水平和垂直分布上均随土壤深度和距油井威尔斯距离的增加而减少。来源分析表明，TNAs主要来源于石油类，PAHs受石油泄漏、燃烧和交通运输的控制。相关性分析表明，TPHs残留对土壤环境质量有影响。该研究对认识石油的环境行为具有重要意义，可为石油污染的修复和风险控制提供支持。
Petroleum contamination surrounding oilfields has attracted more concerns. However, the levels, distribution and source of petroleum of Changqing Oilfield soil still remain lots of knowns, which is important for local environmental protection. Given soil contamination issues in Changqiong Oilfield were investigated. The maximum concentrations of total petroleum hydrocarbons (TPHs), N-alkanes (TNAs) and polycyclic aromatic hydrocarbons (PAHs) were determined to be 1960.29, 96.13 and 0.82 mg/kg, respectively. TPHs were higher in the north than the south of the study area. TPHs decreased in the horizontal and vertical distribution as soil depth and distance from oil wells increased. Source analysis showed that TNAs mainly originated from petroleum, PAHs were controlled by petroleum spills, combustion and traffic. Correlation analysis implied that TPHs residues had an effect on soil environmental quality. This study have important implications for understanding the environmental behavior of petroleum and can provide support for petroleum remediation and risk control.