Miaorou Du, Jianfeng Tang, Xiaoyi Zhao, Xiaolei Yang, Chun-nu Geng
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Biodegradable polymers (e.g., PLA, PBAT) and petroleum-based polymers generally exhibited comparable DOC release capacities. Furthermore, high DOC release was linked to aquatic acidification, resulting in significant reductions in pH. The dissolved organic matter was dominated by hydrophilic components and low-aromaticity fractions, with 78.95% of the SUVA<sub>254</sub> values being below 3 L/(mg·m). And longer aging times and greater microplastic accumulation favored the release of aromatic and hydrophobic components. Fluorescence characterization demonstrated that microbial byproduct-like substances were predominant, accompanied by humic-like and protein-like fluorophores, indicating both polymer degradation and biofilm activity. A parallel factor analysis applied to data from 20 articles (<i>n</i> = 431) indicated that the dissolved organic matter was composed of 57.54% protein-like substances and 42.46% humic-like substances. Our data analysis offered valuable insights into the behavior and fate of microplastics in ecosystems.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 12","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Characteristics and Molecular Signatures of Microplastic-Derived Dissolved Organic Matter\",\"authors\":\"Miaorou Du, Jianfeng Tang, Xiaoyi Zhao, Xiaolei Yang, Chun-nu Geng\",\"doi\":\"10.1007/s11270-025-08470-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Microplastic leaching is increasingly recognized as a significant environmental concern, yet the characteristics of microplastic-dissolved organic matter (MP-DOM) remain inadequately understood. This study systematically synthesized data from 51 published studies to quantitatively evaluate the characteristics and controlling factors of MP-DOM release across multiple microplastic types and environmental conditions. The analysis revealed that multiple environmental variables jointly regulate MP-DOM release: smaller particle size, higher temperatures, and UV-induced aging significantly promoted dissolved organic carbon (DOC) leaching, while solution ionic strength and pH also modulated release behavior, and high DOC release was associated. Biodegradable polymers (e.g., PLA, PBAT) and petroleum-based polymers generally exhibited comparable DOC release capacities. Furthermore, high DOC release was linked to aquatic acidification, resulting in significant reductions in pH. The dissolved organic matter was dominated by hydrophilic components and low-aromaticity fractions, with 78.95% of the SUVA<sub>254</sub> values being below 3 L/(mg·m). And longer aging times and greater microplastic accumulation favored the release of aromatic and hydrophobic components. Fluorescence characterization demonstrated that microbial byproduct-like substances were predominant, accompanied by humic-like and protein-like fluorophores, indicating both polymer degradation and biofilm activity. A parallel factor analysis applied to data from 20 articles (<i>n</i> = 431) indicated that the dissolved organic matter was composed of 57.54% protein-like substances and 42.46% humic-like substances. Our data analysis offered valuable insights into the behavior and fate of microplastics in ecosystems.</p></div>\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":\"236 12\",\"pages\":\"\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2025-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11270-025-08470-5\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-025-08470-5","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Characteristics and Molecular Signatures of Microplastic-Derived Dissolved Organic Matter
Microplastic leaching is increasingly recognized as a significant environmental concern, yet the characteristics of microplastic-dissolved organic matter (MP-DOM) remain inadequately understood. This study systematically synthesized data from 51 published studies to quantitatively evaluate the characteristics and controlling factors of MP-DOM release across multiple microplastic types and environmental conditions. The analysis revealed that multiple environmental variables jointly regulate MP-DOM release: smaller particle size, higher temperatures, and UV-induced aging significantly promoted dissolved organic carbon (DOC) leaching, while solution ionic strength and pH also modulated release behavior, and high DOC release was associated. Biodegradable polymers (e.g., PLA, PBAT) and petroleum-based polymers generally exhibited comparable DOC release capacities. Furthermore, high DOC release was linked to aquatic acidification, resulting in significant reductions in pH. The dissolved organic matter was dominated by hydrophilic components and low-aromaticity fractions, with 78.95% of the SUVA254 values being below 3 L/(mg·m). And longer aging times and greater microplastic accumulation favored the release of aromatic and hydrophobic components. Fluorescence characterization demonstrated that microbial byproduct-like substances were predominant, accompanied by humic-like and protein-like fluorophores, indicating both polymer degradation and biofilm activity. A parallel factor analysis applied to data from 20 articles (n = 431) indicated that the dissolved organic matter was composed of 57.54% protein-like substances and 42.46% humic-like substances. Our data analysis offered valuable insights into the behavior and fate of microplastics in ecosystems.
期刊介绍:
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation.
Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.