Co-occurrence of microplastics and heavy metals to urban river sediments: the vertical distribution characterization and comprehensive ecological risk assessment

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-02-03 DOI:10.1016/j.jhazmat.2025.137500

Wenjuan He, Jinhui Huang, Si Liu, Lixiu Shi, Enjie Li, Jinying Hu, Wei Zhang, Chenyu Zhang, Haoliang Pang, Zhexi Liu

{"title":"Co-occurrence of microplastics and heavy metals to urban river sediments: the vertical distribution characterization and comprehensive ecological risk assessment","authors":"Wenjuan He, Jinhui Huang, Si Liu, Lixiu Shi, Enjie Li, Jinying Hu, Wei Zhang, Chenyu Zhang, Haoliang Pang, Zhexi Liu","doi":"10.1016/j.jhazmat.2025.137500","DOIUrl":null,"url":null,"abstract":"Microplastics (MPs) and heavy metals (HMs) are deemed to pose ecological risks in river ecosystems. The vertical distribution of these pollutants is more conducive to reflecting pollution status and monitoring trends in the sediment. This work analyzed the horizontal and vertical distribution, carried out a risk assessment of HMs and MPs in urban river sediment, and further optimized the two-dimensional comprehensive index (TPI) model for MPs-HMs combined pollution. The highest rates of contamination were for Zn, As, and Cd, and MP abundance in sediment ranged from 20.00 ± 8.82 to 1933.33±141.42 items·kg<sup>−1</sup>, mainly characterized by PE and fragments. Moreover, the mean potential ecological risk index for MPs (PRI) at different depths of sediment were 197.21±247.14, 176.79±293.86, and 246.98±538.38, respectively, indicating a moderate risk and the highest PRI value is at the bottom. The TPI exhibited that the average TPI at different depths is 324.10±138.63, 368.30±157.13, and 481.88±296.05, indicating that the comprehensive pollution risk level belongs to considerable, the TPI increases with the depth of the sediment. The results further improved the objectivity and accuracy of the research on the ecotoxicity of compositive pollutants and provided an in-depth understanding of MPs and HMs in urban freshwater basins from a vertical perspective.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"3 1","pages":""},"PeriodicalIF":12.2000,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hazardous Materials","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.jhazmat.2025.137500","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

Microplastics (MPs) and heavy metals (HMs) are deemed to pose ecological risks in river ecosystems. The vertical distribution of these pollutants is more conducive to reflecting pollution status and monitoring trends in the sediment. This work analyzed the horizontal and vertical distribution, carried out a risk assessment of HMs and MPs in urban river sediment, and further optimized the two-dimensional comprehensive index (TPI) model for MPs-HMs combined pollution. The highest rates of contamination were for Zn, As, and Cd, and MP abundance in sediment ranged from 20.00 ± 8.82 to 1933.33±141.42 items·kg⁻¹, mainly characterized by PE and fragments. Moreover, the mean potential ecological risk index for MPs (PRI) at different depths of sediment were 197.21±247.14, 176.79±293.86, and 246.98±538.38, respectively, indicating a moderate risk and the highest PRI value is at the bottom. The TPI exhibited that the average TPI at different depths is 324.10±138.63, 368.30±157.13, and 481.88±296.05, indicating that the comprehensive pollution risk level belongs to considerable, the TPI increases with the depth of the sediment. The results further improved the objectivity and accuracy of the research on the ecotoxicity of compositive pollutants and provided an in-depth understanding of MPs and HMs in urban freshwater basins from a vertical perspective.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.