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Interactions between Iron Minerals and Dissolved Organic Matter Derived from Microplastics Inhibited the Ferrihydrite Transformation as Revealed at the Molecular Scale

Environmental Science & Technology 2024 33 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Mengwei Zhang, Mengwei Zhang, Ling Ding, Ling Ding, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xinran Qiu, Quan Chen, Mengwei Zhang, Mengwei Zhang, Ling Ding Xinran Qiu, Xinran Qiu, Ling Ding Xinran Qiu, Xuetao Guo, Ling Ding Ling Ding, Xuetao Guo, Xuetao Guo, Ling Ding Mengwei Zhang, Xiaoling Shan, Xuetao Guo, Xiaoling Shan, Ling Ding, Xuetao Guo, Ling Ding Mengwei Zhang, Xiaoling Shan, Ling Ding, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xiaoling Shan, Xiaoling Shan, Xuetao Guo, Ling Ding Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Mengwei Zhang, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Ling Ding Ling Ding Ling Ding Ling Ding Ling Ding Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xujun Liang, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xujun Liang, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Ling Ding, Xuetao Guo, Xinran Qiu, Xiaoling Shan, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xinran Qiu, Ling Ding Xinran Qiu, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xinran Qiu, Yü Huang, Quan Chen, Ling Ding Quan Chen, Xujun Liang, Xinran Qiu, Xujun Liang, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Ling Ding Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Ling Ding, Xujun Liang, Xujun Liang, Xiaoling Shan, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, Xiaoling Shan, Xuetao Guo, Xuetao Guo, Ling Ding Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Quan Chen, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Yü Huang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Ling Ding

Summary

Researchers studied how dissolved organic matter released from degrading microplastics interacts with iron minerals in the environment. They found that this microplastic-derived organic matter inhibited the natural transformation of ferrihydrite, an important iron mineral in soil and water systems. The study reveals that microplastic breakdown products can alter fundamental geochemical processes, potentially affecting nutrient cycling and pollutant behavior.

Microplastic-derived dissolved organic matter (MP-DOM) is an emerging carbon source in the environment. Interactions between MP-DOM and iron minerals alter the transformation of ferrihydrite (Fh) as well as the distribution and fate of MP-DOM. However, these interactions and their effects on both two components are not fully elucidated. In this study, we selected three types of MP-DOM as model substances and utilized Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) and extended X-ray absorption fine structure (EXAFS) spectroscopy to characterize the structural features of DOMs and DOM-mineral complexes at the molecular and atomic levels. Our results suggest that carboxyl and hydroxyl groups in MP-DOM increased the Fe-O bond length by 0.02-0.03 Å through interacting with Fe atoms in the first shell, thereby inhibiting the transformation of Fh to hematite (Hm). The most significant inhibition of Fh transformation was found in PS-DOM, followed by PBAT-DOM and PE-DOM. MP-DOM components, such as phenolic compounds and condensed polycyclic aromatics (MW > 360 Da) with high oxygen content and high unsaturation, exhibited stronger mineral adsorption affinity. These findings provide a profound theoretical basis for accurately predicting the behavior and fate of iron minerals as well as MP-DOM in complex natural environments.

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