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微塑料在巴西南部的帕拉纳海的发生,分布和区分

Yan Weber Mesquita^1,2, Cecilia Caroline Vieira Nunes Massignani¹, Maikon Di Domenico³

¹Graduate Program in Coastal and Oceanic Systems, Federal University of Paraná, Av Beira-Mar, S/N, Pontal Do Sul, Pontal Do Paraná, PR, 83255-976, Brazil.

Environmental science and pollution research international

|May 8, 2025

概括

在巴西南部的海上,微塑料污染很普遍,碎片和泡是常见的. 沙坡度和粒度大小等自然因素显著影响微塑料的分布,特别是在后岸.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
生态毒理学生态毒理学

背景情况:

微塑料 (MP) 是新兴的污染物,全球海的报道越来越多.
对海洋环境和生态系统的潜在影响越来越令人担忧.
关于南巴西海洋海上的MP丰富度和分布的数据有限.

研究的目的:

进行首次对巴西南部帕拉纳州海洋海上的微塑料数量和分布进行评估.
分析MP形态型和聚合物组成.
调查控制MP分布和积累的因素.

主要方法:

从巴西南部的帕拉纳州的四个海收集了表面沉积物样本.
样品分析了微塑料的丰富性 (1-5毫米大小分数),形态型和聚合物组成.
在不同海区域检查了分布模式,并与环境因素相关联.

主要成果:

在所有研究的海上检测到微塑料,总共发现了846颗颗粒.
平均度为51.9MP/m2或2.3MP/kg体重.
碎片 (40%),聚烯 (28%),泡 (10%) 是最常见的形态类型,主要由聚乙烯 (35%) 和聚烯 (29%) 组成.
在海地区和海之间,MP度和形态型分布存在显著差异.
观察到一个跨岸的分布模式,后岸是主要的积累区域.

结论:

自然环境因素,如谷物大小和海坡度,是微塑料在沙上的分布和积累的关键驱动因素.
潜在的微塑料来源的接近影响了海之间的形态型组成的变化.
这项研究为了解该地区的微塑料污染提供了关键的基线数据,并为未来的管理策略提供了信息.

关键词:

沙区划区划沙区划区划微塑料是一种微塑料.自然环境变量自然环境变量塑料污染问题塑料污染问题

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