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在特拉华湾河口的微塑料度,特征和尺寸分布

Erik J Nitzberg¹, Swaraj Parmar², Georgia Arbuckle-Keil²

¹Civil & Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA.

|June 5, 2024

概括

德拉华湾的微塑料污染量化,显示聚乙烯和聚烯是主要的聚合物. 在沿海海洋地区发现了较小的微塑料,为污染运输评估提供了信息.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
化学化学化学

背景情况:

河口是了解海洋系统中微塑料 (MP) 运输和运输的关键接口.
河口环境显著影响塑料污染的特征,包括尺寸分布和丰度.

研究的目的:

在特拉华湾河口内量化和描述微塑料 (MP) 污染,包括大小分布.
分析聚合物类型和颗粒特性,以告知环境风险评估.

主要方法:

在两个活动 (2019年,2022年) 中从特拉华河口到沿海海洋收集了31个样本.
使用湿过氧化氧化和密度分离提取的MP;通过富里埃变换红外光谱 (FTIR) 分析的粒子.
记录了2022年样本中的粒子的颜色,形态和尺寸维度.

主要成果:

在1015个分析的颗粒中,确定了324个MP,其度从检测能力低到4.12MP/m3不等.
聚乙烯 (53%) 和聚烯 (43%) 是最丰富的聚合物;较小的MP在沿海海洋地区普遍存在.
观察到总颗粒和塑料颗粒之间的相关性;在前部区域观察到更高的MP度.

结论:

微塑料污染存在于整个特拉华湾河口,具有不同的聚合物类型和尺寸分布.
额头区域可能充当微塑料和巨塑料的积累区域.
这些发现为河口塑料污染的命运,运输和风险评估提供了关键数据.

关键词:

河口的河口河口美国的FTIR是FTIR.巨型塑料是一种巨型塑料.微塑料是一种微塑料.颗粒大小颗粒大小聚合物的聚合物.

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