李海燕;赖子尼;曾艳艺;杨婉玲;高原;

• 1:中国水产科学研究院珠江水产研究所

摘要(Abstract)：

为了解广东典型湿地环境表层沉积物及鱼体中多环芳烃(PAHs)的污染特征,分别于2014年10月和2015年4月采集沉积物及鱼类样品,分析其中16种US EPA优控多环芳烃的主要来源和风险。结果表明,广东典型湿地环境表层沉积物中多环芳烃的含量范围为139.4～1 134.3 ng·g~(-1)干重,鱼类肌肉中多环芳烃含量范围为11.1～33.9 ng·g~(-1)湿重。表层沉积物中有机碳与不同环数的多环芳烃含量均呈现显著的正相关关系。来源分析的结果表明,研究区域表层沉积物中多环芳烃的主要来源为石油排放及燃烧来源的混合。风险评估的结果表明,该区域表层沉积物中多环芳烃存在一定的生态风险,需引起重视;通过食用鱼类造成的致癌风险为2.25×10~(-6)～4.23×10~(-6),略高于美国环保局(US EPA)推荐的可接受风险(10~(-6)),存在一定的潜在致癌风险。对于成年人来说,研究区域鱼类肌肉中多环芳烃产生致癌风险允许的最大日食用量(CR_(lim))范围为124.5～234.6 g·d~(-1),尽管食用这几种鱼的致癌风险不大,居民摄入时仍应加以控制。

关键词(KeyWords)： 多环芳烃;湿地环境;来源;风险

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金项目(31600420);; 中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金项目(2016HY-ZC0501);中国水产科学研究院基本科研业务费专项课题(2015A01YY02)

作者(Author): 李海燕;赖子尼;曾艳艺;杨婉玲;高原;

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