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河流微塑料相关的线性基和多环芳的分布,吸附模式和流出在一个动态的沿海区域

Huiping Wen¹, Po Wang¹, Lei Mai²

¹Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, 511443, China.

Environmental pollution (Barking, Essex : 1987)

|November 15, 2024

概括

微塑料在河口和沿海水域中携带线性基 (LAB) 和多环芳 (PAH). 虽然目前的河流流出量很低,但从2018年到2022年,这些与微塑料相关的污染物出现了令人担忧的上升趋势.

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:

微塑料 (MP) 污染是一个重要的全球环境问题,特别是在沿海生态系统.
了解MP及其相关化学品的环境行为对于降低风险至关重要.
河口和沿海地区是污染物运输和命运的关键接口.

研究的目的:

在珍珠河三角洲的主要河口和沿海地区量化微塑料相关的线性基 (19LAB) 和多环芳 (16PAH).
研究这些化学物质在微塑料和水之间分隔的动态.
评估微塑料携带的19LAB和16PAH的年度河流流出,并将它们与悬浮颗粒物携带的进行比较.

主要方法:

在2022年,在一年的时间内,使用Manta网 (0.33毫米网状) 收集了浮动的微塑料.
在中国珍珠河三角洲的八个主要河口和五个沿海地点进行了采样.
19LAB和16PAH与微塑料相关的度使用已知的分析技术进行测量.

主要成果:

与MPs相关的19LAB和16PAH的平均度在河口地区 (6710和5310 ng g-1) 与沿海地区 (4920和2610 ng g-1) 相比,在河口地区更高.
分区系数 (log Kpw和log Kd) 之间的显著相关性表明,LAB和PAH在MP和悬浮颗粒物上具有类似的分区行为.
议员每年河流流出19LAB和16PAH分别为1170g和414g,显示了从2018年到2022年的上升趋势.

结论:

微塑料在珍珠河三角洲的河口和沿海环境中作为线性基和多环芳的重要载体.
虽然这些污染物通过MP流向河流的流出量目前小于悬浮颗粒物流出的流出量,但观察到的上升趋势值得关注.
该研究强调了微塑料污染,化学污染物和河口/沿海动态之间的复杂相互作用,这对环境管理有影响.

关键词:

沿海地区沿海地区疏水性有机污染物疏水性有机污染物分区分区分区分区分区分区分区分塑料碎片塑料碎片塑料碎片河流的外流是河流的外流.

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