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辽河流域多环芳烃(PAHs)的分布特征及来源解析
引用本文:张岩林,胡健,刘宝剑,李思亮,灌瑾.辽河流域多环芳烃(PAHs)的分布特征及来源解析[J].地球与环境,2012(2):188-194.
作者姓名:张岩林  胡健  刘宝剑  李思亮  灌瑾
作者单位:中国科学院地球化学研究所环境地球化学国家重点实验室;中国科学院研究生院;中国科学院广州地球化学研究所有机地球化学国家重点实验室
基金项目:中国科学院知识创新工程重要方向项目(KZCX2-EW-102);公益性行业科研专项项目(201009032);国家自然科学基金项目(40703021)
摘    要:采用气相色谱-质谱(GC/MS)的分析方法,对辽河水系主要河流的表层水和悬浮物中的16种PAHs进行了定量分析,并对其分布特征、污染水平以及来源进行了探讨。结果显示:颗粒态PAHs的浓度范围为0.41~76.45μg.g-1,溶解态PAHs的浓度范围为32.57~108.47ng.L-1,西辽河PAHs的浓度比东辽河以及辽河干流中PAHs的浓度要高。在多环芳烃组成上,溶解态和颗粒态样品的PAHs均以低环数(二、三环)为主,且溶解态中低环数PAHs所占比例较颗粒态中所占的比例高。其中,溶解态中二环的PAHs比例最高(平均为68.19%),颗粒态中三环的PAHs比例最高(平均为66.28%)。相对于国内外其他河流,辽河流域的PAHs污染处于较低水平,部分河流受到一定程度的污染。辽河水系中PAHs的来源主要是以石油类和化石类燃料燃烧为主的混合源,这与辽宁复杂的能源结构密切相关。

关 键 词:辽河  多环芳烃  分布特征  来源解析

Distribution Characteristics and Source Apportionment of Polycyclic Aromatic Hydrocarbons (PAHs) in the Liaohe River Drainage Basin,Northeast China.
ZHANG Yan-lin,HU Jian,LIU Bao-jian,LI Si-liang,GUAN Jin.Distribution Characteristics and Source Apportionment of Polycyclic Aromatic Hydrocarbons (PAHs) in the Liaohe River Drainage Basin,Northeast China.[J].Earth and Environment,2012(2):188-194.
Authors:ZHANG Yan-lin  HU Jian  LIU Bao-jian  LI Si-liang  GUAN Jin
Institution:1(1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;3.State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China)
Abstract:Sixteen polycyclic aromatic hydrocarbons(PAHs) in surface water and suspended particulate matter(SPM) in the major rivers of the Liaohe River drainage basin were determined by GC/MS.The concentrations and distribution characteristics,pollution levels,and sources of PAHs were discussed.The total PAHs concentrations range from 0.41 to 76.45 μg·g-1(dry weight) in SPM,and 32.57 to 108.47 ng·L-1 in surface water,respectively.The PAHs concentrations in western Liaohe River are higher than those in eastern Liaohe River and its main streams.The compositions of PAHs are predominant by low-ring PAHs(including two-and three-ring PAHs),while the percentage of low-ring PAHs in dissolved form is higher than that in SPM.The two-ring PAHs percentage is highest with an average of 68.19 % in dissolved PAHs,while the three-ring PAHs percentage is highest with an average of 66.28% in SPM,respectively.Compared with other rivers both at home and abroad,the PAHs concentrations in the Liaohe River drainage basin are at a lower level,and some rivers have suffered PAHs contamination to a certain extent.The main sources of PAHs are petroleum and fossil fuel combustion-based mixture,which are related to the complex energy structure of Liaoning Province.
Keywords:LiaoHe River  PAHs  source apportionment
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