东北大西洋地表水中的微塑料污染:采样方法如何影响问题的程度
Valentina Poli1, Lucio Litti2, Maria Cristina Lavagnolo1
1DICEA, Department of Civil, Architectural and Environmental Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy.
The Science of the total environment
|July 9, 2024
概括
在公海中比较微塑料 (MP) 取样方法,发现抓取取样产的度超过曼塔拖网的4000倍. 标准化MP监测需要考虑大小和体积选择性方法,以准确评估污染.
科学领域:
- 海洋污染 海洋污染
- 环境监测环境监测环境监测
- 对微塑料进行分析.
背景情况:
- 对于公海环境,微塑料 (MP) 监测协议的标准化缺乏.
- 采样技术对MP的量化有重大影响,影响污染评估.
- 准确评估MP污染及其影响需要可靠的采样方法.
研究的目的:
- 为了比较两个不同的微塑料采样方法的有效性:曼塔拖网 (大小选择性) 和抓取采样 (体积选择性).
- 评估采样技术对大西洋东北部微塑料丰度数据的影响.
- 为制定微塑料污染的标准化监测协议提供信息.
主要方法:
- 在公海表面水域部署曼塔拖网和抓取采样技术.
- 磁带提升技术在陆上样本处理中的应用,以防止空气污染.
- 通过两种采样方法获得的微塑料度的比较分析.
主要成果:
- 抓取样本导致微塑料度超过四个数量级 (4050个物品/m3) 比曼塔拖网 (0.24个物品/m3) 高.
- 仅靠曼塔拖网捕捞就显著低估了公海表面水域中微塑料的丰富性.
- 抓取样本风险过高估计和高变化由于非代表性的水量,不适合大MP或低度地区.
结论:
- 选择微塑料采样方法至关重要,并且取决于研究目标,通常需要大小和体积选择性方法的组合.
- 这些发现有助于对采样和样品处理阶段的微塑料监测协议进行标准化.
- 准确的微塑料污染评估需要仔细考虑,并可能结合不同的采样策略.
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