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

Significant contribution of different sources of particulate organic matter to the photoaging of microplastics

Water Research 2024 22 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.

Ling Ding, Ling Ding Ling Ding, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Jianrui Pan, Ling Ding Xuetao Guo, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xinran Qiu, Jianrui Pan, Jianrui Pan, Jianrui Pan, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xuetao Guo, Ling Ding Ling Ding Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding, Ling Ding, Ling Ding, Xiaoxiao Wang, Xinran Qiu, Xinran Qiu, Xinran Qiu, Jianrui Pan, Xinran Qiu, Xuetao Guo, Jianrui Pan, Ling Ding Jianrui Pan, Jianrui Pan, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, 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, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xujun Liang, Jianrui Pan, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xujun Liang, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Jianrui Pan, Xujun Liang, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xinran Qiu, Ling Ding, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Ling Ding Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xujun Liang, Xinran Qiu, Xinran Qiu, Ling Ding Xuetao Guo, Ling Ding Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Ling Ding, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, 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, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, 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, Xuetao Guo, Xuetao Guo, Xuetao Guo, 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, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding

Summary

Researchers discovered that particulate organic matter from different natural sources can significantly accelerate the aging of microplastics when exposed to UV light. Organic matter from peat soil showed the strongest effect, generating reactive oxygen species that broke down plastic surfaces more quickly. The study suggests that natural organic matter in the environment plays a larger role in microplastic degradation than previously recognized.

Study Type Environmental

Particulate organic matter (POM), as an important component of organic matter, can act as a redox mediator and thus intervene in the environmental behavior of microplastics (MPs). However, quantitative information on the role of POM in the photoaging of MPs under ultraviolet (UV) light is still lacking. To raise the knowledge gap, through environmental simulation experiments and qualitative/quantitative experiments of active substances, we found that POM from peat soil has stronger oxidation capacity than POM from sediment, and the involvement of POM at high water content makes the aging of MPs more obvious. This is because the persistent radicals and electron-absorbing groups on the surface of POM indirectly generate reactive oxygen species (ROS) by promoting electron transfer, and the dissolved organic matter (DOM) released from POM under UV light (POM-DOM) is further excited to generate triplet-state photochemistry of DOM (DOM*) to promote the aging of MPs. Theoretical calculations revealed that the benzene ring, mainly C = C, and C = O in the main chain in the plastic macromolecule structure are more susceptible to ROS attack, and the differences in the vulnerable sites contained in different plastic structures as well as the differences in the energy band gaps lead to differences in their aging processes. This study firstly elucidates the key role and intrinsic mechanism of POM in the photoaging of MPs, providing a theoretical basis for a comprehensive assessment of the effect of POM on MPs in the environment.

Read via DOI PubMed

Share this paper

Post Share Share Pin Email