西江水体中多环芳烃的分布特征  

Distribution of polycyclic aromatic hydrocarbons(PAHs) in Xijiang River

作　　者：邓红梅[1,2] 陈永亨[1] 

机构地区：[1]广州大学环境科学与工程学院,广东广州510006 [2]广州市污染控制与同位素应用重点实验室,广东广州510006

出　　处：《广州大学学报（自然科学版）》2009年第2期66-71,共6页Journal of Guangzhou University:Natural Science Edition

基　　金：国家自然科学青年基金资助项目(40803026);广东省博士启动基金资助项目(8451009101001023)

摘　　要：采用玻璃纤维滤膜过滤分离西江水柱样品,并根据气相色谱-质谱联用(GC-MS)对多环芳烃(PAHs)进行定量分析.结果表明,溶解相和颗粒相中多环芳烃的浓度分别为21.7~138 ng.L-1和40.9~238μg.kg-1.水体中多环芳烃的总含量(颗粒相及溶解相),洪水期(43.9~116.9 ng.L-1)大于枯水期(25.2~34.1 ng.L-1).从PAHs组成特点来看,溶解相以3环的PAHs为主,占总组分的80%;而颗粒相以3环、4环的PAHs为主,分别占总组分的48%和41%.西江水体多环芳烃的总含量,高于欧洲一些低污染水域,但低于国内一些主要河流.Water column samples from Xijiang River were separated by glass fiber filters and quantitative analyzed by GC-MS.The average PAHs concentrations in dissolved phase and particle phase were 21.7~138 ng·L-1,40.9~238 μg·kg-1,respectively.Clearly seasonal trends were observed,with higher concentration in flood season(43.9~116.9 ng·L-1) and lower in dry season(25.2~34.1 ng·L-1)for the total(particle phase plus dissolved phase) concentrations of PAHs.In dissolved phase,the predominant PAHs were 3 ring PAHs,which o...

关 键 词：多环芳烃 西江 水柱 

分 类 号：X522[环境科学与工程—环境工程]