在中国沿海的沉积物吸附聚二乙烯 (PBDE):分布特征,影响途径和潜在来源
Enrui Li1, Xiangfeng Zeng2, Lixia Li3
1Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
Journal of hazardous materials
|November 4, 2025
概括
聚二乙烯 (PBDE) 在中国累积.
科学领域:
- 环境化学环境化学
- 海洋污染 海洋污染
- 生态毒理学 生态毒理学
背景情况:
- 人类活动导致海洋沉积物作为聚化二乙烯 (PBDE) 的沉降池.
- 之前的区域研究对海洋沉积物中PBDE命运的宏观理解有限.
- PBDE是持久性有机污染物,具有潜在的生态和健康影响.
研究的目的:
- 在中国的海洋沉积物中对PBDE进行全国范围的分析.
- 为了确定主导的PBDE同源体及其在不同海域的分布.
- 调查影响PBDE积累的因素,评估相关风险.
主要方法:
- 在波海 (BS),东中国海 (ECS),黄海 (YS) 和南中国海 (SCS) 的海洋沉积物中分析PBDE.
- 确定主要的同源物 (BDE-15,BDE-47,BDE-209).
- 应用基于流动性的III级多媒体模型来确定输入源和质量转移.
主要成果:
- 在ECS沉积物中,PBDE平均度最高 (12.9μg/kg dw),明显高于YS.
- 社会经济,地理和环境因素影响了PBDE的积累.
- 大气沉积被确定为主要输入来源,特别是SCS沉积物.
- 与YS相比,ECS,SCS和BS沉积物中的非致癌风险较高,尽管整体人口健康风险并不显著.
结论:
- 在中国的海洋沉积物中,PBDE分布广泛,区域差异很大.
- 大气沉积是PBDE进入海洋环境的关键途径.
- 调查结果为中国的海洋环境管理和PBDE污染评估提供了关键数据.
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