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Elucidating the characteristic of leachates released from microplastics under different aging conditions: Perspectives of dissolved organic carbon fingerprints and nano-plastics

Water Research 2023 76 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.

To‐Hung Tsui, Xiuna Ren, Xiuna Ren, To‐Hung Tsui, Haoran Zhao, Xiuna Ren, Xiuna Ren, Xiuna Ren, Xiuna Ren, Haoran Zhao, Han Ye, To‐Hung Tsui, To‐Hung Tsui, To‐Hung Tsui, To‐Hung Tsui, To‐Hung Tsui, Haoran Zhao, To‐Hung Tsui, Haoran Zhao, Xiuna Ren, Xiuna Ren, To‐Hung Tsui, Zengqiang Zhang, Zengqiang Zhang, Haoran Zhao, Xiuna Ren, To‐Hung Tsui, Quan Wang Quan Wang Quan Wang Zengqiang Zhang, Zengqiang Zhang, To‐Hung Tsui, To‐Hung Tsui, To‐Hung Tsui, To‐Hung Tsui, Xiuna Ren, Zengqiang Zhang, Zengqiang Zhang, Quan Wang Zengqiang Zhang, Zengqiang Zhang, Quan Wang Quan Wang Zengqiang Zhang, Quan Wang Quan Wang Quan Wang Quan Wang Xiuna Ren, Zengqiang Zhang, Zengqiang Zhang, Zengqiang Zhang, Quan Wang

Summary

Researchers investigated how different aging conditions affect the release of dissolved organic carbon and nanoplastics from PVC and polystyrene microplastics over 130 days. The study found that UV aging and high temperatures promoted the release of nanoplastics and altered the chemical characteristics of leached substances, with UV-aged treatments producing smaller, rougher nanoparticles that may pose greater ecological risks.

Polymers

PVC

Despite numerous studies that have been devoted to investigating the aging behaviors of microplastics (MPs), dissolved organic carbon (DOC) and nano-plastics (NPs) released from MPs under different aging conditions were limited. Herein, the characterizations and underlying mechanisms of DOC and NPs leaching from MPs (PVC and PS) in the aquatic environment for 130 days under different aging conditions were investigated. The results showed that aging could reduce the abundance of MPs, and high temperature and UV aging generated small-sized MPs (< 100 μm), especially UV aging. DOC-releasing characteristics were related to MP type and aging condition. Meanwhile, MPs were prone to release protein-like and hydrophilic substances except for 60 °C aging of PS MPs. Additionally, 8.77 × 10-8.87 × 10 and 4.06 × 10-3.94 × 10 NPs/L were detected in leachates from PVC and PS MPs-aged treatments, respectively. High temperature and UV promoted the release of NPs, especially UV irradiation. Meanwhile, smaller sizes and rougher NPs were observed in UV-aged treatments, implying higher ecological risks of leachates from MPs under UV aging. This study highlights the leachate released from MPs under different aging conditions comprehensively, which could offset the knowledge gap between the MPs' aging and their potential threats.

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