酞酸酯在海河干流水体和菹草中的分布 Distribution of Phthalate Acid Esters in Waters and Potamoget

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酞酸酯在海河干流水体和菹草中的分布

Distribution of Phthalate Acid Esters in Waters and Potamogeton crispus L. from the Mainstream of Haihe River

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摘要:于2008年3月29日~5月25日对海河干流水体和水生植物菹草中酞酸酯的分布进行了采样调查.结果表明,海河干流水体和菹草中均检出了酞酸二丁酯(DBP)和酞酸二异辛酯(DEHP),水体中DBP、DEHP的浓度分别为0.35~40.68 μg/L(均值7.32 μg/L)和3.54~101.2 μg/L(21.72 μg/L);菹草中DBP、DEHP浓度分别为0.007~0.242 μg/g(0.078 μg/g)和O.163~1.286 μg/g(0.457 μg/g),菹草生长旺盛期DBP和DEHP浓度最高,浓度变化主要受水体中DBP和:DEHP浓度的影响;菹草中DBP和DEHP的PCF值显著大于1,为生长初期最高,衰败期最低;DBP在菹草中浓度及其PCF值均低于DEHP.海河水体中菹草生物巨大,因此菹草是酞酸酯这类疏水性有机污染物的一个重要的汇.
Abstract:Concentrations of phthalate acid esters(PAEs) in waters and aquatic plant, Potamogeton crispus L. , were measured from March 29 to May 25, 2008 in the mainstream of Haihe River. The results showed that dibutyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP) were detected in all samples of waters and Potamogeton crispus L. . Concentrations of DBP and DEHP in water samples ranged from 0.35-40.68 μg/L (mean 7.32 μg/L) and 3.54-101.2 μg/L (mean 21.72 μg/L) , respectively. Concentrations of DBP and DEHP in Potamogeton crispus L. ranged from 0.007-0.242 μg/g (0.078 μg/g) and 0.163-1.286 μg/g (0.457 μg/g), respectively. Concentrations of DBP and DEHP in Potamogeton crispus L. reached the highest value during Potamogeton crispus L. blooming period and were significantly related to concentrations of DBP and DEHP in waters. PCF values of DBP and DEHP by Potamogeton crispus L. were obviously above 1, and the PCFs value reached the maxima during the early growing period and the minima during the period of decay. Concentration and PCF of DBP were both lower than those of DEHP. Potamogeton crispus L. was an important sink of phthalate acid esters, a kind of hydrophobic organic compounds,because of its abundance in Haihe River.
作 者: 迟杰    郑岩    CHI Jie    ZHENG Yan  
作者单位:天津大学环境科学与工程学院,天津,300072 
期 刊:环境科学   ISTICPKU  
Journal:CHINESE JOURNAL OF ENVIRONMENTAL SCIENCE  
年,卷(期):2009, 30(11) 
分类号:X131.2 
关键词: 酞酸酯    海河    菹草    水体   
Keywords: phthalate acid esters(PAEs)    Haihe River    Potamogeton crispus L.    waters   
机标关键词:酞酸酯海河干流水体菹草分布Haihe RiverDEHPDBPhydrophobic organic compounds浓度的影响duringdibutyl phthalate疏水性有机污染物water samples酞酸二丁酯PCF水生植物生长浓度变化采样调查 
基金项目:国家自然科学基金 
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