Temporal Archive of Atmospheric Microplastic Deposition Presented in Ombrotrophic Peat,Environmental Science & Technology Letters

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Temporal Archive of Atmospheric Microplastic Deposition Presented in Ombrotrophic Peat
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2021-10-25 , DOI: 10.1021/acs.estlett.1c00697
D Allen _{1,

2} , S Allen _{2,

3,

4} , G Le Roux ₂ , A Simonneau ₅ , D Galop _{6,

7} , V R Phoenix ₁

Affiliation

Ombrotrophic peatland─fed solely from atmospheric deposition of nutrients and precipitation─provide unique archives of atmospheric pollution and have been used to illustrate trends and changes in atmospheric trace element composition from the recent decadal to the Holocene period. With the acknowledgment of atmosphere plastic pollution, analysis of ombrotrophic peat presents an opportunity to characterize the historical atmospheric microplastic pollution prevalence. Ombrotrophic peatland is often located in comparatively pristine mountainous and boreal areas, acting as sentinels of environmental change. In this paired site study, a Sphagnum ombrotrophic peat record is used for the first time to identify the trend of atmospheric microplastic pollution. This high altitude, remote location ombrotrophic peat archive pilot study identifies microplastic presence in the atmospheric pollution record, increasing from <5(±1) particles/m²/day in the 1960s to 178(±72) particles/m²/day in 2015–2020 in a trend similar to the European plastic production and waste management. Compared to this catchment’s lake sediment archive, the ombrotrophic peat core appears to be effective in collecting and representing atmospheric microplastic deposition in this remote catchment, collecting microplastic particles that are predominantly ≤20 μm. This study suggests that peat records may be a useful tool in assessing the past quantities and trends of atmospheric microplastic.

中文翻译：

大气中微塑料沉积的时间档案在 Ombrotrophic 泥炭中呈现

同养泥炭地——完全由大气中的养分沉积和降水提供——提供了独特的大气污染档案，并已被用来说明从最近十年到全新世时期大气微量元素组成的趋势和变化。随着对大气塑料污染的承认，对嗜碱性泥炭的分析提供了表征历史大气微塑料污染流行的机会。互养泥炭地通常位于相对原始的山区和北方地区，充当环境变化的哨兵。在这个配对站点研究中，泥炭藓首次利用嗜碱性泥炭记录识别大气微塑料污染趋势。这项高海拔、偏远地区的同质营养泥炭档案试点研究确定了大气污染记录中微塑料的存在，从1960 年代的<5(±1) 个颗粒/m ² /天增加到 178(±72) 个颗粒/m ²2015-2020 年/天的趋势类似于欧洲的塑料生产和废物管理。与该流域的湖泊沉积物档案相比，嗜碱性泥炭核似乎可以有效地收集和代表该偏远流域的大气微塑料沉积物，收集主要≤20 μm 的微塑料颗粒。这项研究表明，泥炭记录可能是评估大气微塑料过去数量和趋势的有用工具。

更新日期：2021-11-09

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