城市园地土壤中空气中微塑料的沉积

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2025-05-05 DOI:10.1016/j.envpol.2025.126372

Luís Fernando Amato-Lourenço , Crislaine Bertoldi , Martijn van Praagh , Matthias Rillig

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引用次数: 0

摘要

空气中微塑料（MPs）对城市土壤的广泛污染是一个新兴的环境问题，特别是在粮食生产的城市分配花园（UAGs）。本研究调查了德国柏林三个uag中议员的垂直分布，为期90天。在3个深度（表层、1-15 cm和15-30 cm）采集土壤样品，利用光学光热红外（O-PTIR）光谱分析MPs的组成和浓度，检测限为0.1 μm。结果显示，纤维是主要的MP类型，在表层中发现的浓度最高。MPs浓度随土壤深度的增加而降低，纤维的垂直渗透能力有限。我们还确定了19种不同的聚合物类型，其中聚对苯二甲酸乙二醇酯（PET），聚酯（PES）和聚乙烯（PE）是最常见的。观察MPs沉积的时间变化，在第90天达到显著峰值。PM2.5浓度、降水量、风速等环境因子对MPs的沉积有影响。降水和PM2.5与沉积增加呈正相关，而较高的风速会减少MPs积累。这些发现突出了MPs在城市土壤中的普遍存在，并表明环境条件显著影响MPs的分布。了解这些动态对于评估MPs对城市环境中土壤健康的长期生态影响至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Environmental factors influence airborne microplastic deposition in the soil of urban allotment gardens

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Environmental factors influence airborne microplastic deposition in the soil of urban allotment gardens

The widespread contamination of urban soils by airborne microplastics (MPs) is an emerging environmental concern, particularly in urban allotment gardens (UAGs) where food production occurs. This study investigates the vertical distribution of MPs in three UAGs in Berlin, Germany, over 90 days. Soil samples were collected at three depths (surface, 1–15 cm, and 15–30 cm) and analysed for MPs composition and concentration, with a detection limit of 0.1 μm using Optical PhotoThermal InfraRed (O-PTIR) spectroscopy. Results revealed that fibres were the dominant MP type, with the highest concentrations found in surface layers. MPs concentrations decreased with soil depth, and fibres showed limited vertical penetration. We also identified 19 different polymer types, with polyethylene terephthalate (PET), polyester (PES), and polyethylene (PE) being the most common. Temporal variations in MPs deposition were observed, with a significant peak at 90 days. Environmental factors, including PM_2.5 concentration, precipitation, and wind velocity, played a role in MPs deposition. Precipitation and PM_2.5 were positively associated with increased deposition, while higher wind speeds reduced MPs accumulation. These findings highlight the pervasive presence of MPs in urban soils and suggest that environmental conditions significantly influence MPs distribution. Understanding these dynamics is essential for assessing the long-term ecological impacts of MPs on soil health in urban environments.

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.