环渤海北部沿海地区表层土壤中PAHs的污染特征及风险评价  

Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Surface Soil along the North Costal Area of the Bohai Sea

作　　者：焦文涛[1] 王铁宇[1] 吕永龙[1] 罗维[1] 胡文友[1] 

机构地区：[1]中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085

出　　处：《生态毒理学报》2010年第2期193-201,共9页Asian Journal of Ecotoxicology

基　　金：国家重点基础研究发展计划(973)项目(No.2007CB407307);国家科技支撑计划项目(No.2008BAC32B07);中国科学院知识创新工程重要方向性项目(No.KZCX2-YW-420-5);中国科学院重大项目(No.KZCX1-YW-06-05-02)

摘　　要：系统采集了环渤海北部沿海地区31个表层土壤样品,利用GC/MS分析了16种USEPA优控多环芳烃(PAHs)的含量和组分特征,运用主成分因子载荷法揭示了其污染来源,并初步评价了其风险水平.结果表明,沿海地区65%的土壤已被污染,最高污染样点PAHs含量达920.4ng·g-1,平均含量309.5ng·g-1,与国内外相关研究比较,处于中低等污染水平.各类燃料的不完全燃烧是该地区土壤中PAHs的主要来源,石油类挥发或泄漏对采油区土壤中PAHs的累积影响显著.Concentrations,distribution,sources and risk level of 16 polycyclic aromatic hydrocarbons（PAHs）listed for prior control by US EPA were studied along the north costal area of the Bohai Sea.PAH contents in 31 surface soil samples from this area were detected by gas chromatography equipped with mass spectrometry（GC/MS）.Principal component analysis was made to identify sources of PAH pollutants.Results showed that,1）PAH concentrations in this area ranged from 66.3ng·g-1 to 920.4ng·g-1,which suggested that there were low to mid levels of PAH contamination;2）According to PCA analysis,incomplete combustion and burning of fuels were the major sources for the contamination,while petroleum volatilization and leakage had influences on the PAH accumulation in petroleum industrial area .3）Pollution risk analysis showed that 65% of the Tianjin Binhai Industrial Area was contaminated by PAHs.

关 键 词：土壤污染 多环芳烃 环渤海地区 风险评价 

分 类 号：X53[环境科学与工程—环境工程] X131.3