大港油田土壤中PAHs的组成特征及来源分析  

Concentration and Origin of Polycyclic Aromatic Hydrocarbons in the Soil of Dagang Oil Field

作　　者：孔露露 史明静 梁晶晶 晏希宁 周启星[4] KONG Lulu;SHI Mingjing;LIANG Jingjing;YAN Xining;ZHOU Qixing(Department of Resource and Environment, Shijiazhuang University, Shijiazhuang 050035, China;Center for Ecological Post-doctoral Studies, College of Life Science, Hebei Normal University, Shijiazhuang 050000, China;Hebei Provincial Agricultural Broadcast and Television School, Shijiazhuang 050000, China;Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China)

机构地区：[1]石家庄学院资源与环境科学学院,河北石家庄050035 [2]河北师范大学生态学博士后科研流动站,河北石家庄050000 [3]河北省农业广播电视学校,河北石家庄050000 [4]南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室/天津市城市生态环境修复与污染防治重点实验室,天津300071

出　　处：《环境科学与技术》2018年第5期151-157,共7页Environmental Science & Technology

基　　金：河北省自然科学基金青年科学基金:生物炭输入对潮褐土中PAHs的强化生物降解机制研究(D2017106007)

摘　　要：采集天津大港油田8个表层土壤样品,采用气相色谱-质谱联用检测16种环境优先控制多环芳烃(PAHs)的含量,分析其组成特征和污染水平,运用环数比值法、特征比值法和主成分析法探讨其污染来源,并初步评价了风险水平。结果表明,16种PAHs在大港油田土壤中均有不同程度的检出。PAHs总量介于2 636.2~11 759.6 ng/g之间,根据Maliszewska-Kordybach出的总量标准,属于重度污染。综合3种源解析方法,推断天津大港油田土壤PAHs主要来自石油污染,其次化石燃料燃烧对PAHs含量也有较大影响。风险评估表明,大港油田点源污染土壤超过了加拿大土壤环境质量标准中的安全限值,具有潜在的生态风险。The concentration of 16 polycyclic aromatic hydrocarbons（PAHs） listed for prior control by US EPA in soil sampled from Dagang Oil Field were investigated by gas chromatography equipped with mass spectrometry（GC/MS）. This results were made used to to evaluate the level of soil contamination and potential health risks to human beings. In addition, relative concentrations of PAH compounds with different benzene rings and principal component analysis were used to identify the possible sources of PAHs in the soil. Results showed that all 16 PAHs were detected. The total concentration of 16 PAHs ranged from 2 636.2 to 11 759.6 ng/g, which was considered heavily contaminated according to the criteria proposed by Maliszewska-Kordybach to evaluate the level of soil contamination. PAHs pollutants in soil mainly originated from petroleum contamination, followed by the release of coal combustion. Moreover, the benzo（a）pyrene（Bap） toxicity equivalent quantity for 16 PAHs（Σ16 TEQBap） in the soil from point sources exceeded Canadian soil quality guidelines, indicating unacceptable ecological risks to biota and human beings.

关 键 词：多环芳烃 来源 风险评估 天津 大港油田 

分 类 号：X825[环境科学与工程—环境工程] X833