Back to papers
0
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. Detection Methods Marine & Wildlife Remediation Sign in to save

High-Resolution Mass Spectrometry Combined with Reactive Oxygen Species Reveals Differences in Photoreactivity of Dissolved Organic Matter from Microplastic Sources in Aqueous Environments

Environmental Science & Technology 2024 59 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Xuetao Guo, Ling Ding Ling Ding, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Hao Chen, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Hao Chen, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xinran Qiu, Ling Ding, Ling Ding Ling Ding Hao Chen, Hao Chen, Xuetao Guo, Xiaoling Shan, Ling Ding, Hao Chen, Xuetao Guo, Xuetao Guo, Ling Ding Ling Ding, Xiaoling Shan, Xuetao Guo, Ling Ding Xuetao Guo, Xiaoling Shan, Ling Ding, Xinran Qiu, Ling Ding Xuetao Guo, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Hao Chen, Xuetao Guo, Xiaoling Shan, Xiaoling Shan, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Hao Chen, Xinran Qiu, Xuetao Guo, Ling Ding Xinran Qiu, Xinran Qiu, Xinran Qiu, Xujun Liang, Xinran Qiu, Xinran Qiu, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding Xinran Qiu, Xinran Qiu, Xinran Qiu, Xuetao Guo, Ling Ding Ling Ding Ling Ding Ling Ding Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xinran Qiu, Hao Chen, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Ling Ding Xuetao Guo, Xinran Qiu, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xujun Liang, Xinran Qiu, Xujun Liang, Hao Chen, Ling Ding Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Ling Ding, Xujun Liang, Xujun Liang, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xujun Liang, Xujun Liang, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Xiaoling Shan, Xuetao Guo, Xuetao Guo, Ling Ding Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Xiaoling Shan, 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, 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, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xujun Liang, Xujun Liang, Xinran Qiu, Xujun Liang, Ling Ding, Ling Ding, Xiaoling Shan, Xuetao Guo, Xujun Liang, Xinran Qiu, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, 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, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, 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, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding

Summary

Researchers analyzed the dissolved organic matter that different types of microplastics release into water and how it reacts with sunlight. Plastics with aromatic structures like polystyrene and PET released compounds that broke down faster and generated more reactive oxygen species than polyethylene or polypropylene. Understanding how different plastics chemically alter water quality is important because these released compounds and reactive species can affect aquatic life and the safety of water sources used by people.

Polymers
PE PET PP PS

Microplastics (MPs)-derived dissolved organic matter (MPs-DOM) is becoming a non-negligible source of DOM pools in aquatic systems, but there is limited understanding about the photoreactivity of different MPs-DOM. Herein, MPs-DOM from polystyrene (PS), polyethylene terephthalate (PET), poly(butylene adipate-<i>co</i>-terephthalate) (PBAT), PE, and polypropylene (PP), representing aromatic, biodegradable, and aliphatic plastics, were prepared to examine their photoreactivity. Spectral and high-resolution mass spectrometry analyses revealed that PS/PET/PBAT-DOM contained more unsaturated aromatic components, whereas PE/PP-DOM was richer in saturated aliphatic components. Photodegradation experiments observed that unsaturated aromatic molecules were prone to be degraded compared to saturated aliphatic molecules, leading to a higher degradation of PS/PET/PBAT-DOM than PE/PP-DOM. PS/PET/PBAT-DOM was mainly degraded by hydroxyl (<sup>•</sup>OH) via attacking unsaturated aromatic structures, whereas PE/PP-DOM by singlet oxygen (<sup>1</sup>O<sub>2</sub>) through oxidizing aliphatic side chains. The [<sup>•</sup>OH]ss was 1.21-1.60 × 10<sup>-4</sup> M in PS/PET/PBAT-DOM and 0.97-1.14 × 10<sup>-4</sup> M in PE/PP-DOM, while the [<sup>1</sup>O<sub>2</sub>]ss was 0.90-1.35 × 10<sup>-12</sup> and 0.33-0.44 × 10<sup>-12</sup> M, respectively. This contributes to the stronger photoreactivity of PS/PET/PBAT-DOM with a higher unsaturated aromatic degree than PE/PP-DOM. The photodegradation of MPs-DOM reflected a decreasing tendency from aromatic-unsaturated molecules to aliphatic-saturated molecules. Special attention should be paid to the photoreactivity and environmental impacts associated with MPs-DOM containing highly unsaturated aromatic compounds.

Read via DOI PubMed

Sign in to start a discussion.

Share this paper

Post Share Share Pin Email