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水力动力学和生态系统条件对黄海持续有机污染物的时间空间变化的影响

Aobo Wang¹, Xinyu Guo², Xiaokun Ding³

¹School of Hydraulic Engineering, Ludong University, Yantai 264025, China.

Journal of hazardous materials

|March 20, 2024

概括

像PCB-153和BDE-209这样的持久有机污染物 (POP) 在黄海中表现出明显的季节和空间变化. 这些差异是由它们独特的生物化学特性和环境相互作用驱动的.

科学领域:

环境化学环境化学
海洋学海洋学海洋学
污染建模污染建模

背景情况:

沿海海域作为陆基持久性有机污染物 (POPs) 的重要沉水池.
POPs具有多样化的生化特性,导致海洋环境中复杂的时间空间变化.
了解POPs的行为对于评估海洋生态系统健康至关重要.

研究的目的:

为了研究两种不同的POPs的时间空间变化,多化二同源153 (PCB-153) 和黄海中的脱二乙烯 (BDE-209).
根据其生物化学特征,阐明控制POPs不同行为的因素.
分析生物在POPs的命运和运输中的作用.

主要方法:

开发和应用一个三维的水力动力学-生态系统-POP合模型.
模拟PCB-153和BDE-209度 (溶解和颗粒结合).
分析POP的季节性和空间分布模式以及影响因素 (例如,亨利定律常数,生物度因子).

主要成果:

溶解的PCB-153度在春晚达到峰值,而BDE-209在夏天达到峰值.
两种POP都在春季初显示出高颗粒结合度.
在夏季,溶解的PCB-153积聚在海底,而BDE-209则集中在表面.
由于H'和BCF较高,PCB-153的挥发和颗粒吸附率比BDE-209更高.

结论:

生物化学性质,包括亨利定律常数和生物度因子,显著影响沿海海洋中POP的季节性和空间分布.
与BDE-209相比,生物在黄海中在PCB-153的运输中起着更为明显的作用.
结合模型有效地模拟了海洋生态系统中不同POP的复杂行为.

关键词:

平衡的质量度是平衡的质量度.预算预算预算预算预算预算合型号的模型持久性有机污染物持久性有机污染物季节和空间的变化.

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