摘要
为探讨焦化企业周边农田表层土壤多环芳烃(PAHs)的含量特征,以山西晋中某焦化企业周边的农田为研究对象,于2017年7月在该焦化厂周边的农田内采集了8个样点的0~20 cm耕作层土壤样品,采用气质联用仪对US EPA 16种优控PAHs的含量进行检测,分析了该焦化厂周边耕作层土壤中PAHs的含量、组成,并对其进行了风险分析。结果表明,16种优控PAHs含量的浓度范围为215.0~826.8 ng/g,7种致癌性PAHs的平均含量约占16种优控PAHs的39%;采样点土壤中PAHs的含量高低与其距焦化企业的距离及盛行风向有关;土壤中优势PAHs成分依次为PHE、FLA、BbF、IcdP、CHR、NAP、BghiP和PYR。研究结果可为该焦化企业周边农田土壤PAHs的污染评价与防治提供科学依据。
To explore the characteristics of polycyclic aromatic hydrocarbons(PAHs)in the topsoil of farmland surrounding coking enterprises,a coking enterprise was selected as a research object in a county in central Shanxi.In July 2017,8 samples of 0-20 cm cultivated layer soil samples were collected in the farmland around the coking plant,and the concentration of 16 US EPA PAHs was detected by GC/MS,and the coking plant was analyzed.The content and composition of PAHs in the surrounding farming layer soil,and the risk analysis was performed.The results showed that the concentration range of the 16 types of PAHs was 215.0-826.8 ng/g,and the average content of the 7 types of carcinogenic PAHs accounted for about 39%of the 16 types of PAHs.The level of PAHs was related to its distance from coking enterprises and the prevailing wind direction.The dominant PAHs components in soil were PHE,FLA,BbF,IcdP,CHR,NAP,BghiP and PYR.The research results can provide scientific basis for PAHs pollution evaluation and control of farmland soil around the coking enterprise.
作者
何佳璘
段永红
孙健
HE Jialin;DUAN Yonghong;SUN Jian(College of Resources and Environment,Shanxi Agricultural University,Taigu 030801,China)
出处
《山西农业科学》
2020年第3期416-419,440,共5页
Journal of Shanxi Agricultural Sciences
基金
国家自然科学基金项目(41271507)。
关键词
多环芳烃
农田
耕作层土壤
污染特征
风险分析
PAHs
farmland
cultivated soil
pollution characteristics
risk analysis
