中文关键词工业土壤多环芳烃(PAHs)污染特征影响因素成都 英文关键词industrial soilpolycyclic aromatic hydrocarbons (PAHs)pollution characteristicsinfluencing factorsChengdu

作者	单位	E-mail
冉宗信	四川大学建筑与环境学院, 成都 610065 四川大学新能源与低碳技术研究院, 成都 610065	1026790082@qq.com
陈靖宇	四川大学建筑与环境学院, 成都 610065 四川大学新能源与低碳技术研究院, 成都 610065
王亚婷	成都市环境保护科学研究院, 成都 610072
邢智	四川省冶金地质勘查局六〇五大队, 眉山 620800
魏威	四川大学建筑与环境学院, 成都 610065 四川大学新能源与低碳技术研究院, 成都 610065
余江	四川大学建筑与环境学院, 成都 610065 四川大学新能源与低碳技术研究院, 成都 610065	yujianggz@163.com

中文摘要 为完善我国典型工业区土壤多环芳烃（polycyclic aromatic hydrocarbons，PAHs）污染特征数据库，系统采集了成都市4个典型石油加工类工业区表层土壤样品，采用高效液相色谱法分析16种美国环保署优先控制PAHs的含量和组分特征.结果表明，4个工业区表层土壤（0~30 cm）中多环芳烃总含量范围为191.2~1604.2 μg·kg^-1，平均含量（583.6±365.6）μg·kg^-1；各工业区土壤PAHs均主要以中环PAHs和高环PAHs为主，各单体PAHs中以菲、芘、荧蒽和苯并［b］荧蒽为主要特征因子，且均存在潜在的污染风险.同时，采用数理统计方法分析土壤有机质及土壤颗粒粒径与PAHs含量的相关性，并揭示土壤PAHs赋存影响因素.结果表明，在土壤污染含量较高地块，土壤有机质是PAHs较好的吸附剂，能够在一定程度上预测土壤PAHs的迁移转化行为及土壤生态风险（PAHs致癌性）；与有机质相比，土壤粒径与PAHs的相关性较低，总体表现为砂粒与PAHs含量无显著相关性，粉粒与之弱正相关，黏粒与之弱负相关.通过本研究，为此类区域的土壤修复实践或学术研究提供依据. 英文摘要 To improve the pollution signature database for polycyclic aromatic hydrocarbons (PAHs) in typical industrial areas in China, surface soil samples were collected from four typical petroleum-processing industrial areas of Chengdu. The concentration and composition of 16 PAHs listed for prior control by the United States Environmental Protection Agency (US EPA) were determined using high-performance liquid chromatography (HPLC). The result showed that the concentration of PAHs in surface soils of the four industrial areas ranged from 191.2 to 1604.2 μg·kg^-1, with an average of (583.6±365.6) μg·kg^-1. The PAHs in the present study were mainly composed of medium-molecular-weight PAHs and high-molecular-weight PAHs. Among the PAHs detected in the study soils, phenanthrene (PHE), pyrene (PYR), fluoranthene (FLT), and benzo[b]fluoranthene (BbF) were the major pollutants presenting a potential pollution risk. Selected mathematical statistical methods were used to analyze the relationship between soil organic matter (SOM), soil particle diameter and PAH content, and to simultaneously identify the factors influencing PAHs in the soils. SOM was shown to be a favorable absorbent, predicting the migration and transformation behavior of PAHs in surface soil and soil ecological risk (i.e., PAH carcinogenicity) to some extent. Compared with SOM, the correlation between PAHs and soil particle size was relatively low, showing a weak positive correlation with silt, a weakly negatively correlation with clay, and no significant correlation with sand. These results provide a basis for soil remediation practices and further research in such industrial areas.

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