新疆某石油化工园区土壤中多环芳烃赋存特征、来源解析及风险评价  

Characteristics,source apportionment,and risk assessment of polycyclic aromatic hydrocarbons(PAHs)in soils of a petrochemical industrial park in Xinjiang,China

作　　者：孙萱萱 雷荣荣 闫劲烨 康国栋 王宁 朱新萍 王灵 SUN Xuanxuan;LEI Rongrong;YAN Jinye;KANG Guodong;WANG Ning;ZHU Xinping;WANG Ling(College of Resources and Environment Sciences,Xinjiang Agricultural University,Urumqi 830052;Xinjiang Tianxi Environmental Protecting Technology Co.Ltd.,Urumqi 830000;Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing 210008;College of Bioscience and Resource Environment/Key Laboratory of Urban Agriculture(North China),Ministry of Agriculture and Rural Affairs,Beijing University of Agriculture,Beijing 102206,China)

机构地区：[1]新疆农业大学资源与环境学院,乌鲁木齐830052 [2]新疆天熙环保科技有限公司,乌鲁木齐830000 [3]生态环境部南京环境科学研究所,南京210008 [4]北京农学院生物与资源环境学院/农业农村部华北都市农业重点实验室,北京102206

出　　处：《干旱区资源与环境》2025年第3期187-199,共13页Journal of Arid Land Resources and Environment

基　　金：中央引导地方科技发展专项资金项目(ZYYD2023C23);天山英才青年科技拔尖人才项目(2022TSYCCY0007)资助。

摘　　要：为了解新疆某典型石油化工园区土壤中多环芳烃(PAHs)的赋存特征,采集园区46个表层土壤样品进行分析,利用特征化合物比值法和PMF模型对PAHs来源进行解析,毒性当量法评价土壤PAHs潜在生态风险状况,终生致癌风险评价模型评价土壤PAHs健康风险状况。结果表明:园区表层土壤∑15PAHs的范围为45.59~11769.95μg·kg^(-1)(鲜重,下同),均值为1376.46μg·kg^(-1)(鲜重,下同)。在园区划分6种不同土地利用类型,其中工业用地(简称IL)土壤、道路(简称TL)土壤、公共管理用地(简称PAL)土壤、居住用地(简称RL)土壤、草地(简称GL)土壤和其他用地(简称OL)土壤中PAHs浓度均值分别为2518.4、418.3、654.9、1787.2、445.1和766.86μg·kg^(-1),不同土地利用类型土壤之间PAHs含量差异显著(P<0.05)。园区土壤PAHs组分以4环为主,总体趋势为4环>3环>5环>2环>6环。园区土壤的PAHs来源较为复杂,石油燃烧(34.9%)、石油挥发(25.0%)、煤炭和生物质燃烧(20.7%)以及石油和煤炭燃烧(19.4%)综合作用于园区表层土壤。风险评价结果表明,园区土壤中PAHs污染存在潜在的生态风险,但整体生态风险状况处于可接受水平;园区不同土地利用类型土壤对儿童和成人均存在潜在健康风险,IL土壤对人群的潜在健康风险较大,儿童的潜在健康风险大于成人。To investigate the pollution characteristics of polycyclic aromatic hydrocarbons(PAHs)in the surface soil of a typical petrochemical park in Xinjiang,46 surface soil samples were collected for analysis.The sources of PAHs were identified using diagnostic ratio methods and Positive Matrix Factorization(PMF)modeling,while the potential ecological risk was assessed using the toxicity equivalence factor method,and the health risks were evaluated with a lifetime cancer risk assessment model.The results indicate that the concentration of∑_(15)PAHs in the park′s surface soil ranged from 45.59 to 11769.95μg·kg^(-1)(on a fresh weight basis,hereinafter the same),with an average value of 1376.46μg·kg^(-1)(fresh weight).Six distinct types of land use were delineated within the park:industrial land(IL),traffic land(TL),public administration land(PAL),residential land(RL),grassland(GL),and other land(OL).The mean concentrations of PAHs in the soils of these areas were 2518.4,418.3,654.9,1787.2,445.1,and 766.86μg·kg^(-1),respectively,with significant differences observed among the different land use types(P<0.05).The composition of PAHs in the park′s soil was predominantly four-ring compounds,following the general trend of 4-ring>3-ring>5-ring>2-ring>6-ring.The sources of PAHs in the park′s surface soil were complex,with contributions from petroleum combustion(34.9%),petroleum evaporation(25.0%),coal and biomass combustion(20.7%),as well as a combined effect of petroleum and coal combustion(19.4%).The risk assessment results suggest that while there is a potential ecological risk associated with PAHs pollution in the park′s soil,the overall ecological risk status is at an acceptable level.Additionally,the soils of different land use types within the park pose potential health risks to both children and adults,with the potential health risk being higher for children than for adults,and the IL soil presenting a significantly greater potential health risk to the population.This study provides valuable insights into

关 键 词：石油化工园区 土壤 多环芳烃(PAHs) 源解析 风险评价 

分 类 号：X53[环境科学与工程—环境工程]