任娇;王小萍;王传飞;龚平;姚檀栋;

• 1:中国科学院青藏高原研究所中国科学院青藏高原环境变化与地表过程实验室
• 2:中国科学院大学
• 3:中国科学院青藏高原地球科学卓越创新中心

摘要(Abstract)：

南亚排放的持久性有机污染物(POPs)可随大气传输到青藏高原,然而POPs在高原多介质间的迁移与分配尚不清晰。本研究利用三级逸度模型对4种POPs(六六六α-HCH,滴滴涕p,p'-DDT,菲Phe和苯并芘Ba P)在纳木错流域的迁移与归趋进行了模拟。结果表明,大气沉降是该区域污染物的主要输入过程,而降解损失则是主要的输出途径。就最终归趋而言,土壤是POPs在纳木错流域的重要储库,其存储了大于50%的POPs。此外,湖水和沉积物分别对α-HCH和PAHs具有较强的存储能力。灵敏度分析的结果表明,环境温度、大气中POPs的浓度及其理化性质是影响POPs在环境中分布的关键参数。本研究明确了纳木错流域不同POPs的迁移方向和归趋特征,这将为青藏高原生态安全评估提供科学依据。

关键词(KeyWords)： 青藏高原;持久性有机污染物;多介质逸度模型;迁移;归趋

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41222010,41671480);; 中国科学院青年创新促进会项目(CAS2011067)

作者(Author): 任娇;王小萍;王传飞;龚平;姚檀栋;

Email:

DOI:

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