典型东北城市近海海域中邻苯二甲酸酯的污染分布特征  

Distribution characteristics of phthalates in coastal seawater from Northeast China

作　　者：佟磊 杨甲甲 金静[2] 曲健 耿柠波[2] 张海军[2] TONG Lei;YANG Jiajia;JIN Jing;QU Jian;GENG Ningbo;ZHANG Haijun(College of Materials Science and Engineering,Hebei University of Engineering,HanDan 056107,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,DaLian 116023,China)

机构地区：[1]河北工程大学材料科学与工程学院,河北邯郸056107 [2]中国科学院大连物理化学研究所,辽宁大连116023

出　　处：《海洋环境科学》2024年第6期889-897,共9页Marine Environmental Science

基　　金：国家自然科学基金面上项目(22176188)。

摘　　要：海洋生物的水生环境安全直接影响着沿海地区居民的海产品膳食健康。大连作为典型东北沿海城市,毗邻渤海和黄海,其近海海域水质安全受到普遍关注。为了了解大连市近海海域表层海水中邻苯二甲酸酯(phthalates,PAEs)的污染状况,采用液液提取-层析柱净化-气相色谱/质谱对大连市周围海域中6种优控PAEs的污染状况和分布特征进行了研究。结果表明,表层海水中PAEs(Σ6PAEs)的总浓度为86.40~7683 ng/L,邻苯二甲酸二丁脂(dibutyl phthalate,DBP)和邻苯二甲酸二(2-乙基己基)酯(diethylhexyl phthalate,DEHP)为主要组成成分,平均贡献率分别为67.0%和30.6%;邻苯二甲酸丁苄酯(benzyl butyl phthalate,BBP)和邻苯二甲酸二正辛酯(di-n-octyl phthalate,DnOP)在所有样品中均未检出。与已报道数据相比,除个别采样点外,大连市近海海域中PAEs总体污染水平较低。污水排放和垃圾渗滤液可能是PAEs污染的主要来源。生态风险评估结果表明,DEHP对所研究的水生环境造成的生态风险大于其他测定目标物。The aquatic environment of marine organisms directly affects the dietary health of residents in coastal areas.As a typical coastal city in the Northeast China,Dalian is adjacent to Bohai Sea and Yellow Sea,and its water-quality safety has been widely concerned.In order to understand the pollution status of phthalates(PAEs)in the surface seawater of Dalian city,its concentration level and distribution characteristics of six PAEs in the seawater were studied by liquid-liquid extraction,column purification coupled with gas chromatography/mass spectrometry.The study reports a range of 86.40 to 7683 ng/L for the total concentration of six PAEs(Σ6PAEs)in surface seawater.Dibutyl phthalate(DBP)and diethylhexyl phthalate(DEHP)are the major components,with average contribution rates of 67.0% and 30.6%,respectively,whereas benzyl butyl phthalate(BBP)and di-n-octyl phthalate(DnOP)were not detected at all.In comparison with the data previously reported,the overall PAEs pollution level in Dalian coastal waters is relatively low,except for some individual samples.It is speculated that sewage discharge and landfill leachate may be the major sources of PAEs pollution.The ecological risk assessment results indicated that the risk posed by diethylhexyl phthalate(DEHP)to the aquatic ecosystem under study was higher than that of other assessed contaminants.

关 键 词：邻苯二甲酸酯 海水 污染 分布 

分 类 号：P734[天文地球—海洋化学]