Article
?
AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button.
Tier 2
?
Original research — experimental, observational, or case-control study. Direct primary evidence.
Sign in to save
Probing the molecular interaction between photoaged polystyrene microplastics and fulvic acid
The Science of The Total Environment2024
15 citations
?
Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 50
?
0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Dongqin He,
Dongqin He,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Chaolin Tu,
Xiangliang Pan
Chenyang Liu,
Chenyang Liu,
Chenyang Liu,
Chenyang Liu,
Chaolin Tu,
Xiangliang Pan
Xiangliang Pan
Yifeng Zeng,
Chaolin Tu,
Chaolin Tu,
Yifeng Zeng,
Xiangliang Pan
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Chenyang Liu,
Yifeng Zeng,
Dongqin He,
Yifeng Zeng,
Juan Xu,
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Juan Xu,
Juan Xu,
Yifeng Zeng,
Anping Zhang,
Yifeng Zeng,
Chaolin Tu,
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Dongqin He,
Xiangliang Pan
Dongqin He,
Chaolin Tu,
Dongqin He,
Dongqin He,
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Anping Zhang,
Anping Zhang,
Xiangliang Pan
Chenyang Liu,
Dongqin He,
Dongqin He,
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Dongqin He,
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Hongwei Luo,
Juan Xu,
Xiangliang Pan
Xiangliang Pan
Anping Zhang,
Anping Zhang,
Xiangliang Pan
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Juan Xu,
Juan Xu,
Xiangliang Pan
Anping Zhang,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Summary
Researchers investigated how photoaged polystyrene microplastics interact with fulvic acid, a common natural organic compound found in water environments. Using advanced spectroscopy techniques, they found that aging changed the surface chemistry of the microplastics and altered how they bind to fulvic acid at the molecular level. The study suggests that weathering processes in the environment may significantly change how microplastics interact with and transport other dissolved substances in water.
As emerging contaminants, microplastics (MPs) are becoming a matter of global concern, and they have complex interactions with dissolved organic matter (DOM) widely present in aqueous environments. Here, we investigate the molecular interactions between aged polystyrene microplastics (PS-MPs) and fulvic acid (FA) under neutral conditions using a series of analytical techniques. The structural changes of FA and the binding interactions of PS-MPs with FA at a molecular level were explored by fluorescence and FT-IR combined with two-dimensional correlation spectroscopy (2D-COS). Results showed that photoaging of PS-MPs changed the sequence of structural variations with FA. Atomic force microscopy-infrared spectroscopy (AFM-IR) strongly demonstrated that the surface roughness of both pristine and aged PS-MPs greatly increased after FA addition. Meanwhile, AFM-IR and Raman spectroscopy revealed a stronger interaction between aged PS-MPs and FA. The content of oxygen-containing functional groups in PS-MPs increased after aging and after binding with FA, and surface distribution of these functional groups also changed. XPS analyses indicated that the oxygen content in PS-MPs increased after the interaction with FA and the increase in oxygen content was even greater in aged PS-MPs. Overall, these research findings are useful to understand the environmental impacts of DOM-MPs interactions and to address the uncertainty of MPs aging effect on their environmental behavior in aquatic ecosystems.