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Research on Microplastic Pollution in Water and Soil Environment

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Soil and Water".

Deadline for manuscript submissions: 20 November 2025 | Viewed by 3595

Special Issue Editors

Guizhou Academy of Tobacco Science, Guizhou, China
Interests: plastic pollutant analysis; microplastics detection; microplastics ecotoxicology; soil and plant metabolomics; plastic additives composition with GC-MS/LC-MS
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Guest Editor
College of Eco-Environment Engineering, Guizhou Minzu University, Guiyang, China
Interests: environmental geochemistry; ecosystem carbon cycle; microplastics; environmental monitoring; water and soil environment; contaminated soil remedia-tion

Special Issue Information

Dear Colleagues,

The increasing agricultural mulching production of plastics in recent years has led to severe plastic pollution in the environment. Microplastics (MPs), which are plastics less than 5 mm in length, are even more harmful than larger plastic items, and microplastic pollution has become an emerging environmental issue, especially in water and soil environments. MPs in water and soil environments are extremely diverse and complex. This makes it difficult to detect their abundance, analyze influencing factors, and evaluate the ecological and environmental risks. Recently, MP additives have also become a major concern to the environment due to their toxicity. Based on the above problems, we mainly focus on MP pollution in water and soil environments, and the main topics are as follows: 1) advanced detection techniques for diverse MP compositions; 2) the distribution characteristics and influencing factors of MPs; 3) the ecological and environmental risks to plants and animals, evaluated with omics techniques; 4) MP additive compositions; 5) control strategies for MP remediation.

Dr. Kai Cai
Dr. Taoze Liu
Guest Editors

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Keywords

  • microplastic detection
  • microplastic abundance
  • plastic additives composition
  • ecolog-ical risk
  • environmental risk
  • water and soil environment

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Published Papers (2 papers)

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Research

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18 pages, 3188 KiB  
Article
The Migration and Pollution Risk of Microplastics in Water, Soil, Sediments, and Aquatic Organisms in the Caohai Watershed, Southwest China
by Xu Wang, Xianliang Wu, Xingfu Wang, Pinhua Xia, Lan Zhang, Xianfei Huang and Zhenming Zhang
Water 2025, 17(8), 1168; https://doi.org/10.3390/w17081168 - 14 Apr 2025
Viewed by 230
Abstract
The migration and driving factors of microplastics (MPs), as an emerging pollutant, have been reported in plateau lakes. However, whether MPs can accumulate to an extreme degree in the local aquatic organisms of plateau lakes remains unclear. Therefore, the present study mainly aims [...] Read more.
The migration and driving factors of microplastics (MPs), as an emerging pollutant, have been reported in plateau lakes. However, whether MPs can accumulate to an extreme degree in the local aquatic organisms of plateau lakes remains unclear. Therefore, the present study mainly aims to investigate the MPs accumulated in tissues of grass carp as well as reveal their migration processes and driving factors in the Caohai watershed, a typical plateau lake in southwest China. Density flotation (saturated NaCl solution) and laser direct infrared imaging spectrometry were used to analyze the relative abundance and morphological characteristics of MPs, respectively. The results showed that the MPs’ abundance in soil, water, and sediments ranged from 1.20 × 103 to 1.87 × 104 n/kg, from 9 to 223 n/L, and from 5.00 × 102 to 1.02 × 104 n/kg, respectively. The contents and composition of MPs in forestland soils were more plentiful in comparison with cultivated land soils and marshy grassland soils. Polyethylene (PE), polyvinylchloride (PVC), PA from caprolactam (PA6), and PA from hexamethylene diamine and adipic acid (PA66) were detected in grass carp, and PE was detected in all organs of grass carp. MP concentrations in the stomach, intestines, tissue, skin, and gills of grass carp ranged from 54.94 to 178.59 mg/kg. MP pollution probably mainly originated from anthropogenic factors (road traffic, farming activities, the habits of residents scattered around the study area, etc.) due to the Caohai watershed’s considerable proximity to Weining city. In addition, wind, land runoff, rivers, and atmospheric deposition in the locality directly and indirectly promoted MP migration. Our results suggested that although there is moderate MP pollution in soil, water, sediment, and grass carp in comparison with other areas, it is necessary to pay attention to PE and PVC migration via the various environmental media and the risks associated with consuming the local grass carp. The local government can make several policies to reuse and recycle agricultural film to alleviate local PE and PVC pollution. Full article
(This article belongs to the Special Issue Research on Microplastic Pollution in Water and Soil Environment)
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Review

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27 pages, 2592 KiB  
Review
A Review of Sources, Hazards, and Removal Methods of Microplastics in the Environment
by Xingang Meng, Juan Yuan, Qian Huang, Ruiqi Liu, Yi Yang, Xi Yang and Kaiqi Wang
Water 2025, 17(1), 102; https://doi.org/10.3390/w17010102 - 2 Jan 2025
Cited by 2 | Viewed by 3008
Abstract
The prevalence of microplastics in a wide range of environmental media has attracted increasing attention worldwide. This review article provides a comprehensive and systematic review of the nature, sources, hazards, and removal methods of microplastics in the environment. In contrast to previous studies [...] Read more.
The prevalence of microplastics in a wide range of environmental media has attracted increasing attention worldwide. This review article provides a comprehensive and systematic review of the nature, sources, hazards, and removal methods of microplastics in the environment. In contrast to previous studies focusing on the sources and risks of microplastics in a single environment, this article comprehensively analyses atmospheric, terrestrial runoff, marine and freshwater sources of microplastics and explores the hazards they pose to the environment and the health of humans and other organisms. Microplastics cause multiple adverse effects on aquatic and terrestrial organisms through accumulation, including growth inhibition, oxidative stress, inflammation, organ damage, and germ cell abnormalities. They may also enter the food chain and affect human health. This article summarizes the latest research progress on microplastic removal technologies from biological, physical, and chemical perspectives, with high efficiency, sustainability, and degradability for biological removal and adsorption and filtration being more effective for physical removal. This provides valuable information for future research related to microplastics. We advocate for a reduction in the use of microplastics and provide references for solving the problem of microplastic pollution. Full article
(This article belongs to the Special Issue Research on Microplastic Pollution in Water and Soil Environment)
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