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Assessment of relationship between aging and contaminant-carryover for different filter layer of surgical mask under urban environmental stressors

Journal of Hazardous Materials 2022 16 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xiaohua Shu, Lishan Zhang, Xuetao Guo Xuetao Guo Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Xuetao Guo Lishan Zhang, Qian Zhang, Qian Zhang, Qian Zhang, Lishan Zhang, Xue Bai, Lishan Zhang, Xue Bai, Xue Bai, Xue Bai, Xiaohua Shu, Lishan Zhang, Lishan Zhang, Ling Ding, Xuetao Guo Ling Ding, Xuetao Guo Xue Bai, Xue Bai, Xue Bai, Xue Bai, Xue Bai, Xue Bai, Xue Bai, Xue Bai, Ling Ding, Ling Ding, Xuetao Guo Xuetao Guo Xuetao Guo Ling Ding, Xuetao Guo Lishan Zhang, Xuetao Guo Xuetao Guo Ling Ding, Xuetao Guo Qian Zhang, Xuetao Guo Ling Ding, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Ling Ding, Xuetao Guo Xiyuan Zhang, Xue Bai, Qian Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xue Bai, Ling Ding, Xuetao Guo Xuetao Guo Xuetao Guo Xiyuan Zhang, Xuetao Guo Ling Ding, Xuetao Guo Xuetao Guo Lishan Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Lishan Zhang, Ling Ding, Xue Bai, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Qian Zhang, Qian Zhang, Qian Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Ling Ding, Xuetao Guo Xuetao Guo Xuetao Guo Lishan Zhang, Lishan Zhang, Lishan Zhang, Xuetao Guo Lishan Zhang, Xiaohua Shu, 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 Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lishan Zhang, Lishan Zhang, Lishan Zhang, Qian Zhang, Qian Zhang, Xue Bai, Xiaohua Shu, Xiaohua Shu, Xiaohua Shu, Xuetao Guo Xue Bai, Xuetao Guo Xuetao Guo Xuetao Guo Qian Zhang, 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 Qian Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lishan Zhang, Xuetao Guo Lishan Zhang, 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

Summary

Researchers exposed surgical mask layers to UV radiation and ozone to simulate urban environmental aging, finding that UV caused more severe degradation, that aged masks sorbed more organic pollutants such as the antibiotic tylosin and fungicide phenanthrene, and that hydrophobic interactions dominated contaminant uptake across all conditions.

Abundant disposable surgical masks (SMs) remain in the environment and continue to age under urban environmental stressors. This study aimed to investigate the aging characteristics of SMs and the effect of different aged layers of SMs on phenanthrene (PHE), tylosin (TYL), and sulfamethazine (SMT) under two different urban environmental stressors (UV and ozone). The results show that UV exposure causes more severe aging of the SM layers than ozone. The middle layer, made of melt-brown fabric, has displayed the highest degree of aging due to its smaller diameter and mechanical strength. The two-dimensional correlation spectroscopy (2D-COS) analysis reveals the different aging sequences of functional groups and three layers in aged SMs under the two urban environmental stressors. Whether the SMs are aged or not, the adsorptions of three organic pollutants on SMs are positively correlated with the octanol-water partition coefficient. Furthermore, except for the dominant hydrophobic interaction, aged SMs can promote the adsorption of three organic pollutants by accessory interactions (hydrogen bonding and partition), depending on their structures. These findings highlight the environmental effects of new microplastic (MP) sources and coexisting pollutants under the influence of COVID-19, which is helpful in accurately evaluating the biological toxicity of SMs.

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