| 西安表土中多环芳烃的污染特征及其来源解析 |
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| 引用本文： | 周变红,张承中,蒋君丽,马万里,杨震龙.西安表土中多环芳烃的污染特征及其来源解析[J].环境科学与技术,2012(8):97-99,192. |
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| 作者姓名： | 周变红 张承中 蒋君丽 马万里 杨震龙 |
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| 作者单位： | 西安建筑科技大学环境与市政工程学院;宝鸡文理学院地理科学与环境工程系;哈尔滨工业大学城市水资源与水环境国家重点实验室国际持久性有毒物质联合研究中心;西安市环境监测站 |
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| 基金项目： | 陕西自然科学基金项目(2007D20);陕西省教育厅专项科研基金项目(06JK268);宝鸡文理学院院级重点项目(ZK0797) |
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| 摘 要： | 通过2008年采集西安不同功能区表层土壤样品,运用GC/MS质谱联用仪对美国EPA优控的16种多环芳烃(PAHs)进行定性、定量分析,来探讨西安表层土壤种多环芳烃的污染特征及其来源。结果表明,16种PAHs均被检出,西安表土中ΣPAHs浓度范围为125~9 057 ng/g,平均值为2 727 ng/g,主要以4~6环PAHs为主,共占总量的69%。PAHs的空间分布规律为:工业区>文教区>绿化区>郊区>农村。应用特征比值判断法可知,西安表土中PAHs主要是煤的不完全燃烧和机动车尾气排放所产生的混合源污染。借鉴国外土壤污染标准可知西安城区表土污染较为严重。
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| 关 键 词： | 西安市 表层土壤 多环芳烃 比值判断法 |
Characteristics and Sources of PAHs in Top-soil of Xi’an City |
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| ZHOU Bian-hong,ZHANG Cheng-zhong,JIANG Jun-li,MA Wan-li,YANG Zhen-long.Characteristics and Sources of PAHs in Top-soil of Xi’an City[J].Environmental Science and Technology,2012(8):97-99,192. |
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| Authors: | ZHOU Bian-hong ZHANG Cheng-zhong JIANG Jun-li MA Wan-li YANG Zhen-long |
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| Institution: | 1.School of Environmental and Municipal Engineering,Xi’an University of Architecture and Technology,Xi’an 710056,China;2.Dept.of Geo-science and Environmental Engineering,Baoji College of Arts and Sciences,Baoji 721013,China;3.International Joint Research Center for Persistent Toxic Substances,Harbin Institute of Technology,Harbin 150090,China;4.Xi’an Environmental Monitoring Station,Xi’an 710055,China) |
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| Abstract: | Representative top soil samples were taken and collected from different areas of Xi’an city according to the city’s present functional zoning.Test of the soil samples focused on polycyclic aromatic hydrocarbons(PAHs) pollution,particularly 16 priority PAHs listed by US EPA,which involved qualitative and quantitative analysis using GC/MS.Results of the investigation showed all the 16 PAHs mentioned above were detected,among others,PAHs of 4-6 rings accounted for 69%,and concentrations of PAHs ranged between 125 and 9,057 ng/g.The result also indicated the spatial PAHs distribution in Xi’an in terms of pollution ranking as the industrial area,culture/education area,urban afforested area and followed by the outskirts,while rural area was least polluted by PAHs.Source of PAHs was analyzed by the judging method of characteristics ratio,from which it was inferred that PAHs in the City mainly resulted from incomplete coal burning and automobile emissions. |
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| Keywords: | Xi’an top soil polycyclic aromatic hydrocarbons(PAHs) judging method of characteristics ratio |
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