生态环境学报2023，Vol.32Issue(11)：1952-1963,12.DOI:10.16258/j.cnki.1674-5906.2023.11.006
京津冀地区工业区土壤中多环芳烃的污染特征、源解析及生物因子相关性
Pollution Characteristics,Source Analysis and Correlation of Biological Factors of Polycyclic Aromatic Hydrocarbons in Soils of Industrial Areas in Beijing-Tianjin-Hebei Region
摘要
Abstract
In order to investigate the pollution of industrial soils and its relationship with soil biological factors,and to provide a reference for subsequent environmental monitoring and remediation.Soil samples were collected from the representative industrial parks in Beijing-Tianjin-Hebei region to analyze the semi-volatile organic pollution and soil biological factor activity.The industries around the soil sample sites included metal smelting and rolling processing industry,petroleum processing,coking and nuclear fuel processing industry,transportation equipment manufacturing industry,chemical raw material and chemical product manufacturing industry,which are four typical heavy industries in northern China.The results showed that the detection rates of pyrene(Pyr),fluoranthene(Flu),and bis(2-diethylhexyl)phthalate(DEHP)were the top three among the semi-volatile organic pollutants,with the detection rates of 98.4%,98.4%,and 96.9%,and the maximum mass fractions were 2.84,2.79 and 5.72 mg∙kg-1,respectively.PAHs with 4‒6 rings were the popular PAHs,and the detection rate of benzo(a)pyrene(BaP),a type of carcinogen,was 90.6%.The median mass fraction of ∑16PAHs was 0.67 mg∙kg-1.The variance contribution rate of Flu,Pyr,benzo[a]anthracene(BaA),chrysene(Chr),benzo[b]fluoranthene(BbF),benzo[k]fluoranthene(BkF)and BaP to PAHs pollution in soils was 52.9%.According to the results of the characteristic ratio method and the principal component analysis,the PAHs produced by combustion of liquid fossil fuels accounted for 79.7%of the source of soil PAHs.Microbial biomass carbon(MBC)and microbial biomass nitrogen(MBN)were significantly and negatively correlated with the concentrations of PAHs with 2‒3 rings and ∑16PAHs in soils with depth at 0‒20 cm(r=-0.4,P=0.023).The activity of invertase was significantly and negatively correlated with the concentrations of LMW PAHs(r=0.51,P=0.006),HMW PAHs(r=0.53,P=0.005)in 20‒40 cm soils.These results would provide a basis for evaluating the environmental fate of soil organic pollution.关键词
京津冀/产业类型/土壤有机污染/PAHs源解析/生物因子Key words
Beijing-Tianjin-Hebei/industry types/soil organic pollution/PAHs source analysis/biological factors分类
资源环境引用本文复制引用
许明,张馥颖,孙露露,周增幸,林超霸,朱雪竹..京津冀地区工业区土壤中多环芳烃的污染特征、源解析及生物因子相关性[J].生态环境学报,2023,32(11):1952-1963,12.基金项目
国家重点研发计划项目(2019YFC1804301) （2019YFC1804301）
