The aging and pollution behavior of microplastics in tap water supply system subjected to residual chlorine exposure

被引：0

作者：

Liu, Pengxiao ^{[1
]}

Gao, Shuai ^{[1
]}

Li, Ying ^{[1
]}

Hou, Bin ^{[1
]}

Liu, Ning ^{[1
]}

Du, Zhen ^{[1
]}

Lu, Jing ^{[1
]}

机构：

[1] School of Environment and Safety Engineering, North University of China, Taiyuan

来源：

Environmental Science and Pollution Research | 2025年 / 32卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Aging; Microplastics; Pollution; Residual chlorine; Tap water; Trichloromethane;

D O I：

10.1007/s11356-025-36196-8

中图分类号：

学科分类号：

摘要：

This study investigated the aging and pollution behavior of acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) microplastics (MPs) exposed to residual chlorine in tap water distribution systems. The ABS and PC MPs in the aging processes were analyzed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Results revealed that 0.4 mg/L residual chlorine could induce morphological changes, increase surface oxygen-containing functional groups, and enhance the hydrophilicity of MPs at the CT value of 9216 mg·min/L. Additionally, both ABS and PC MPs released dissolved organic matter (DOM) into water, with higher DOM concentrations observed in the presence of residual chlorine. Besides, this interaction also led to the formation of trichloromethane (TCM). And the TCM production increased with higher MPs concentrations, smaller particle size, and longer chlorine exposure time. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

引用

页码：8975 / 8985

页数：10

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