摘要
本研究于2016年采集太原市公园14个表层土壤样品,应用气相色谱质谱联用仪(GCMS)分析了样品中16种优先控制多环芳烃(PAHs)含量,并探讨了PAHs的来源和健康风险.结果表明,样品中∑16PAHs平均浓度为1301.99 ng·g^(-1)(范围为294.36—2540.64 ng·g-1),与国内其他城市相比属于较高污染水平.土壤中PAHs以4环为主,其次为5环、3环、6环、2环.PAHs空间分布受污染排放源和暴露时间的影响存在较大差异.源解析结果表明,土壤中PAHs主要来自煤和机动车排放、焦化、生物质燃烧,3种来源贡献率分别为64.58%、18.75%、16.67%.通过风险评价发现所有土壤中PAHs均超过相应的标准,存在相当高的潜在风险,对公众健康存在影响,应当引起高度重视.
Fourteen surface soil samples in this study were collected from urban park in Taiyuan in2016. Sixteen priority polycyclic aromatic hydrocarbons（ PAHs） were detected by gas chromatographmass spectrometry（ GCMS）,to investigate of the level,sources and potential health risks of PAHs in soil. The results revealed that the mean concentration of ∑16 PAHs was 1338.60 ng·g-1 ranging from294.36 to 2540.60 ng·g-1. Compared with those in other cities of China,PAHs in soils of Taiyuan was at a higher level. Four ring PAHs were the main components in soils,followed by 5-ring,3-ring,6-ring and 2-ring. Influenced by the emission sources and exposure duration,PAHs showed different concentrations in urban soil samples. The results of source apportionment indicated that PAHs in soils were primarily derived from coal/vehicle emission（ 64.58%）,coking（ 18.75%） and biomass combustion（ 16. 67%）. The health risk of PAHs in soil exceeded the limit of safety standards,indicating potential risk to human health,which should be paid more attention to.
作者
程明超
张璐
何秋生
郭晓方
张桂香
王新明
CHENG Mingchao;ZHANG Lu;HE Qiusheng;GUO Xiaofang;ZHANG Guixiang;WANG Xinming(School of Environment and Safety,Taiyuan University of Science and Technology,Taiyuan,030024,China;State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510630,China)
出处
《环境化学》
CAS
CSCD
北大核心
2018年第9期2031-2038,共8页
Environmental Chemistry
基金
国家自然科学基金(41172316
41401584)
国家教育部重点项目(211026)
山西省回国留学人员科研资助项目(2011080)资助~~
关键词
土壤
多环芳烃
源解析
风险评价
太原
soils
PAHs
source apportionment
risk assessment
Taiyuan
