时瑶;马迎群;秦延文;刘志超;杨晨晨;迟明慧;

• 1:中国环境科学研究院环境基准与风险评估国家重点实验室
• 2:中国环境科学研究院国家环境保护河口与海岸带环境重点实验室

摘要(Abstract)：

利用气相色谱-质谱(GC-MS)检测了大辽河表层水中邻苯二甲酸酯类(PAEs)有机污染物的浓度水平,分析其分布特征,并对PAEs类有机污染物的环境健康风险进行了评价。结果表明,大辽河表层水中共检出4种PAEs,其质量浓度范围为n.d.#0.754μg·L~(-1)。4种PAEs类中质量浓度平均值最高的为邻苯二甲酸二异辛酯(DIOP)(0.36μg·L~(-1)),最低的为邻苯二甲酸二甲酯(DMP)(0.01μg·L~(-1))。4种PAEs浓度贡献大小依次为:邻苯二甲酸二异辛酯(DIOP)、邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸二甲酯(DMP)。DBP浓度基本符合国家地表水环境质量标准(GB3838—2002)。与国内其他水域相比,大辽河表层水中PAEs的污染程度处于较低水平。DMP和DEP的最高值均出现在营口市区最主要的工业和生活污水排污口之一——纱厂潮沟采样点,DBP和DIOP的最高值则分别出现在牛庄大桥和港监潮沟采样点。总PAEs类有机污染物分布趋势为:在工业分布较多的区域及主城区附近水域PAEs浓度较高,大辽河上游区域PAEs浓度相对较低。利用US EPA健康风险评估模型粗略估算,大辽河表层水中PAEs类污染物的非致癌风险指数值低于1。

关键词(KeyWords)： 大辽河;表层水;邻苯二甲酸酯;分布特征;环境健康风险评价

Abstract:

Keywords:

基金项目(Foundation): 国家水体污染控制与治理重大专项(2012ZX07503-002);; 国家自然科学基金青年基金(NO.41406098)

作者(Author): 时瑶;马迎群;秦延文;刘志超;杨晨晨;迟明慧;

Email:

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