Fate and Impacts of Environmental Micro(nano)plastics—From Sampling and Analysis to Risk Assessment

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Emerging Contaminants".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 759

Special Issue Editor


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Guest Editor
Department of Civil, Environmental and Construction Engineering, Texas Tech University, 911 Boston Avenue, Lubbock, TX 79409, USA
Interests: micro(nano)plastics; stormwater; waste management and reuse
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The ubiquity of micro(nano)plastics (MPs), defined as plastic and rubber particles that are <5 mm in size, in contaminating various environmental matrices (including drinking water, wastewater and biosolids) has raised concerns about their wide and potentially adverse impact on ecological and human health. Currently, there are limited studies evaluating the environmental fate and transport process of MPs, resulting in inadequate risk assessments. Furthermore, obtaining a comprehensive understanding of their effects is hindered by a lack of robust, validated and standardized techniques for sampling and characterizing MPs. This Special Issue is focused on collecting and disseminating research articles that address the following areas of micro(nano)plastics research:

  • The development of methods for sampling and characterizing micro- and nanoplastics, with a particular focus on techniques that can simultaneously assess various size distributions (down to ≤1 µm), polymer chemistry, the presence of additives in microplastics, morphologies, etc.
  • Studies evaluating MPs across multiple environmental matrices to assess their fate and transport from source to sink.
  • Toxicity-based studies evaluating the relative importance of microplastic contamination on ecological and/or human health relative to other environmental stressors. This includes contributions that establish specific links between microplastic contamination and its associated impact on ecological and/or human health for real scenarios.
  • Novel analytical approaches to minimize cost and time for characterizing microplastics in relatively simple (drinking water) to complex environmental matrices (biosolids).

Dr. Balaji Anandha Rao
Guest Editor

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Keywords

  • method development and validation
  • toxicity
  • ecological health
  • microplastic
  • nanoplastic
  • human health

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Published Papers (1 paper)

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Research

21 pages, 6618 KB  
Article
Microplastic Pollution in Pavement Sediments of Beijing: Abundance, Characteristics, and Ecological Risk
by Donghai Yuan, Peinan Ye, Chenling Yan, Lili Xu, Jinggang Wang, Chen Wang, Ruiying Wu, Jun Cui and Yingying Kou
Toxics 2026, 14(4), 323; https://doi.org/10.3390/toxics14040323 - 13 Apr 2026
Viewed by 484
Abstract
Pavement sediments are a significant source of microplastics (MPs) in urban environments and a major contributor to stormwater runoff pollution. In this study, we investigated the abundance and characteristics of microplastics in Beijing’s major road networks and functional zones by collecting road sediment [...] Read more.
Pavement sediments are a significant source of microplastics (MPs) in urban environments and a major contributor to stormwater runoff pollution. In this study, we investigated the abundance and characteristics of microplastics in Beijing’s major road networks and functional zones by collecting road sediment samples, and assessed the ecological risks posed by microplastics in road surface sediments in Beijing. The results showed that the average abundance of microplastics in Beijing pavement sediments was 960.9 items/kg, with the highest abundance observed in commercial areas (1505.7 items/kg). The main characteristics of microplastics were black in color (22.4%), fibrous in shape (55.29%), small to medium in size (10–500 µm, 46.95%), with polyethylene (PE) being the most abundant polymer type (30.69%). The Polymer Risk Index (PRI) method showed clearer differentiation of spatial risk patterns in the Beijing study area, with 5 low-risk sites, 8 medium-risk sites and 15 high-risk sites among the sampling sites. Full article
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