蒋昊余;张孟迪;周仁钧;杨颖;李军;张畅;邹世春;张干;

• 1:中山大学海洋学院
• 2:中国科学院广州地球化学研究所
• 3:山东百纳瑞分析仪器科技有限公司

摘要(Abstract)：

北江是发源于湖南(武水)和江西(浈水),汇于广东韶关,流经广东全境并入海的三大河流之一。为了解整个北江抗生素污染情况,共设置44个采样点,并采集了河水及部分沉积物样品,较全面地分析了各样品中12种典型抗生素含量并初步探究了其污染来源。研究发现,包括北江源头在内的全河段均有抗生素的检出,5类抗生素在表层水和沉积物中的平均浓度分别为77.8 ng·L~(-1)和3.6 ng·g~(-1)。其中,大环内酯类污染最为严重,其含量范围为11.7~114.6 ng·L~(-1)和0~435.3 ng·g~(-1),远高于其他类抗生素。表层水中磺胺类的磺胺甲恶唑和氯霉素类的检出率达100%,其中以磺胺甲恶唑(14.7 ng·L~(-1))和阿奇霉素(25.0 ng·L~(-1))为主,而沉积物中以阿奇霉素(35.9 ng·g~(-1))、氧氟沙星(5.4 ng·g~(-1))和四环素(3.3 ng·g~(-1))为主。由于流域污染源种类和数量不同,各抗生素在北江中的分布也存在差异。表层水中抗生素含量水平表现为下游高于上中游,在沉积物中则主要集中于中、下游之间河段。这反映了人类活动强度对北江抗生素污染的直接影响。

关键词(KeyWords)： 抗生素;北江;表层水;沉积物;来源

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(批准号21177162);; 广东省海洋渔业科技推广专项(A201301D01)

作者(Author): 蒋昊余;张孟迪;周仁钧;杨颖;李军;张畅;邹世春;张干;

Email:

DOI:

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