Characterization of the Differences in Dissolved Organic Matter (DOM) Adsorbed on Five Kinds of Microplastics Using Multiple Methods.

Xianshu Fu, Xiangliang Pan, Jun Chen, Mingzhou Zhang, Zihong Ye, Xiaoping Yu

Abstract read

In one paragraph

Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Xianshu FuCollege of Environment, Zhejiang University of Technology, Hangzhou 310032, China.ORCID 0000-0001-7107-9586

Xiangliang PanCollege of Environment, Zhejiang University of Technology, Hangzhou 310032, China.

Jun ChenCollege of Environment, Zhejiang University of Technology, Hangzhou 310032, China.

Mingzhou ZhangKey Laboratory of Microbiological Metrology, Measurement & Bio-Product Quality Security, State Administration for Market Regulation, College of Life Sciences, China Jiliang University, Hangzhou 310018, China.ORCID 0000-0002-8203-8090

Zihong YeKey Laboratory of Microbiological Metrology, Measurement & Bio-Product Quality Security, State Administration for Market Regulation, College of Life Sciences, China Jiliang University, Hangzhou 310018, China.ORCID 0000-0002-5827-3699

Xiaoping YuKey Laboratory of Microbiological Metrology, Measurement & Bio-Product Quality Security, State Administration for Market Regulation, College of Life Sciences, China Jiliang University, Hangzhou 310018, China.

Funding

National Key Research and Development Program of China 2021YFF0602801Natural Fund Exploration Project of Zhejiang Province LTGN23B050001Special Project of Hangzhou Science and Technology Commissioner 20231122t12

6 · The paper itself

Abstract

Microplastics (MPs) are ubiquitous in aquatic environments, soils, and beach sediments, demonstrating a remarkable ability to adsorb dissolved organic matter (DOM). Although there are methods for extracting DOM from water, the approaches for directly extracting DOM from microplastics have not been thoroughly investigated, and the characterization of DOM adsorbed on microplastics is also insufficient. In this study, five different types of microplastic samples were collected from each of five environmental media (water and sediment), and finally 25 samples were obtained. This paper comparatively assessed the extraction efficiency of DOM from MPs with various solvents by using total organic carbon (TOC), culminating in the development of a sodium pyrophosphate-NaOH solution extraction method optimized for DOM. The morphology, material and environmental medium of microplastics were the three primary factors affecting the adsorption of DOM on microplastics, with the highest enrichment ratio of 1.4-1.8 times for extruded polyethylene microplastics (EPE-MPs) characterized by their porous structure in the flowing water environment. The molecular weight of DOM adsorbed on microplastics showed a multi-modal distribution pattern with great dissimilarities among the different environmental media. Gel permeation chromatography (GPC) indicated that the weight-average molecular weight (

Indexed as

dissolved organic matter (DOM)excitation-emission matrix-parallel factor analysis (EEM-PARAFAC)gel permeation chromatography (GPC)microplastics (MPs)total organic carbon (TOC)

Identifiers

PMID40286174

DOI10.3390/molecules30071586

PMCPMC11990482

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