Microplastics and nanoplastics in the marine-atmosphere environment
Microplastics and nanoplastics in the marine-atmosphere environment
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DOI：
10.1038/s43017-022-00292-x
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发表时间：
2022-05-10
影响因子：
42.1
通讯作者：
Wright, Stephanie
中科院分区：
文献类型：
--
作者：
Allen, Deonie;Allen, Steve;Wright, Stephanie
大气微(纳米)塑料输送和海洋-大气交换的发现表明了一个高度复杂的海洋塑料循环，对人类和生态系统健康产生了负面影响。然而，目前的观察结果有限。在这一视角下，我们量化了海洋-大气微(纳米)塑料循环的过程和通量，目的是强调大气微(纳米)塑料传输的剩余未知数。每年有0.013至2,500万公吨的微(纳米)塑料可能在海洋大气中运输并存放在海洋中。然而，这些海洋-大气通量的高度不确定性与数据限制和缺乏研究的可比性有关。为了解决海洋-大气微(纳米)塑料循环中的不确定性和仍然存在的知识差距，我们提出了未来全球海洋-大气微(纳米)塑料观测战略，纳入了新的采样方法，并创建了一个可比较、协调和全球的数据集。结合长期观察和深入调查，这一战略将有助于确定海洋-大气污染的趋势以及对未来政策和管理行动的任何反应。微塑料的大气运输可能是塑料污染海洋的主要来源，但目前的观测仍然有限。这一视角量化了海洋-大气微(纳米)塑料循环的已知预算，并提出了未来的全球观测战略。
The discovery of atmospheric micro(nano)plastic transport and ocean-atmosphere exchange points to a highly complex marine plastic cycle, with negative implications for human and ecosystem health. Yet, observations are currently limited. In this Perspective, we quantify the processes and fluxes of the marine-atmospheric micro(nano)plastic cycle, with the aim of highlighting the remaining unknowns in atmospheric micro(nano)plastic transport. Between 0.013 and 25 million metric tons per year of micro(nano)plastics are potentially being transported within the marine atmosphere and deposited in the oceans. However, the high uncertainty in these marine-atmospheric fluxes is related to data limitations and a lack of study intercomparability. To address the uncertainties and remaining knowledge gaps in the marine-atmospheric micro(nano)plastic cycle, we propose a future global marine-atmospheric micro(nano)plastic observation strategy, incorporating novel sampling methods and the creation of a comparable, harmonized and global data set. Together with long-term observations and intensive investigations, this strategy will help to define the trends in marine-atmospheric pollution and any responses to future policy and management actions.Atmospheric transport of microplastics could be a major source of plastic pollution to the ocean, yet observations currently remain limited. This Perspective quantifies the known budgets of the marine-atmospheric micro(nano)plastic cycle and proposes a future global observation strategy.