{"title":"金属盐溶液中聚酰胺微塑料光催化降解的高分辨质谱分析","authors":"Yunjin Zhong, Lebing Zhuo, Wangyang Lu","doi":"10.1016/j.jes.2023.06.018","DOIUrl":null,"url":null,"abstract":"<div><p><span><span>Microplastic pollution has become one of the most concerned focuses in the world. Among many treatment methods, photocatalysis is considered to be one of the most environmentally friendly methods. In this work, the </span>photodegradation behavior of polyamide microplastics is studied by using polyamide 6 PA6) as model microplastics and FeCl</span><sub>3</sub> as catalyst. It is hoped that the PA6 fiber can be effectively degraded by utilizing the strong oxidizing active species that can be produced after FeCl<sub>3</sub> is irradiated in water. The results shows that PA6 fiber can be almost completely degraded after 10 days of irradiation in FeCl<sub>3</sub><span> aqueous solution, indicating that it is promising to use this new method to solve the problem of PA6 type microplastics. In addition, the chain scission mechanism and degradation process of PA6 are analyzed in detail by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS), which provides a new insight for the study of polymer degradation mechanism.</span></p></div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"139 ","pages":"Pages 473-482"},"PeriodicalIF":6.9000,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analysis of photocatalytic degradation of polyamide microplastics in metal salt solution by high resolution mass spectrometry\",\"authors\":\"Yunjin Zhong, Lebing Zhuo, Wangyang Lu\",\"doi\":\"10.1016/j.jes.2023.06.018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span><span>Microplastic pollution has become one of the most concerned focuses in the world. Among many treatment methods, photocatalysis is considered to be one of the most environmentally friendly methods. In this work, the </span>photodegradation behavior of polyamide microplastics is studied by using polyamide 6 PA6) as model microplastics and FeCl</span><sub>3</sub> as catalyst. It is hoped that the PA6 fiber can be effectively degraded by utilizing the strong oxidizing active species that can be produced after FeCl<sub>3</sub> is irradiated in water. The results shows that PA6 fiber can be almost completely degraded after 10 days of irradiation in FeCl<sub>3</sub><span> aqueous solution, indicating that it is promising to use this new method to solve the problem of PA6 type microplastics. In addition, the chain scission mechanism and degradation process of PA6 are analyzed in detail by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS), which provides a new insight for the study of polymer degradation mechanism.</span></p></div>\",\"PeriodicalId\":15774,\"journal\":{\"name\":\"Journal of environmental sciences\",\"volume\":\"139 \",\"pages\":\"Pages 473-482\"},\"PeriodicalIF\":6.9000,\"publicationDate\":\"2023-06-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of environmental sciences\",\"FirstCategoryId\":\"1089\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1001074223002711\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Environmental Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of environmental sciences","FirstCategoryId":"1089","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1001074223002711","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}
Analysis of photocatalytic degradation of polyamide microplastics in metal salt solution by high resolution mass spectrometry
Microplastic pollution has become one of the most concerned focuses in the world. Among many treatment methods, photocatalysis is considered to be one of the most environmentally friendly methods. In this work, the photodegradation behavior of polyamide microplastics is studied by using polyamide 6 PA6) as model microplastics and FeCl3 as catalyst. It is hoped that the PA6 fiber can be effectively degraded by utilizing the strong oxidizing active species that can be produced after FeCl3 is irradiated in water. The results shows that PA6 fiber can be almost completely degraded after 10 days of irradiation in FeCl3 aqueous solution, indicating that it is promising to use this new method to solve the problem of PA6 type microplastics. In addition, the chain scission mechanism and degradation process of PA6 are analyzed in detail by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS), which provides a new insight for the study of polymer degradation mechanism.
期刊介绍：
Journal of Environmental Sciences is an international peer-reviewed journal established in 1989. It is sponsored by the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, and it is jointly published by Elsevier and Science Press. It aims to foster interdisciplinary communication and promote understanding of significant environmental issues. The journal seeks to publish significant and novel research on the fate and behaviour of emerging contaminants, human impact on the environment, human exposure to environmental contaminants and their health effects, and environmental remediation and management. Original research articles, critical reviews, highlights, and perspectives of high quality are published both in print and online.
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