Volatile organic compounds generation pathways and mechanisms from microplastics in water: Ultraviolet, chlorine and ultraviolet/chlorine disinfection

化学 激进的 紫外线 光化学 环境化学 微塑料 电泳剂 苯乙酮 苯甲醛 有机化学 催化作用 量子力学 物理
作者
Ruijuan Liu,Xinni Wu,Wanhui Zhang,Yuheng Chen,Jianwei Fu,Huase Ou
出处
期刊:Journal of Hazardous Materials [Elsevier BV]
卷期号:441: 129813-129813 被引量:27
标识
DOI:10.1016/j.jhazmat.2022.129813
摘要

Disinfection in water treatments induces microplastics (MPs) to produce various derivative products, among which the volatile organic compounds (VOCs) are still poorly understood. Ultraviolet (UV), chlorine and UV/chlorine disinfections were used to treat polypropylene (PP), polystyrene (PS) and polyvinylchloride (PVC) in this study. Modifications were observed on the MP surfaces, including melting, cracks, folds, and even forming oxygen-containing structures, resulting in the release of a diversity of VOCs. The polymer types of MPs influenced the VOCs characteristics. PP released alkanes, alkenes and aldehydes, while PVC released alkanes, alkenes and halogenated hydrocarbons. VOCs from PS were dominated by unique aromatic alkanes, alkenes and aldehydes. These derived VOCs are generated during different disinfections with distinct mechanisms. UV-C at 254 nm induced direct scission and radical oxidation on MPs. The derived VOCs were mainly bond-breaking fragments. Chlorination relied on HOCl/OCl- electrophilic reactions, resulting fewer VOCs since C-C skeleton MPs have strong resistance to electrophilic reactions. UV/chlorination promotes the generation of chlorine radicals and hydroxyl radicals, thereby causing oxidative damage. Various oxidized VOCs, such as benzaldehyde and acetophenone, were formed. The disinfection reactions can produce various VOCs from MPs, posing potential risks to the ecological environment and human beings.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
乖猫要努力应助最短的咒采纳,获得10
1秒前
2秒前
4秒前
4秒前
liu完成签到 ,获得积分10
5秒前
粗心的胜发布了新的文献求助10
6秒前
小酸奶发布了新的文献求助10
6秒前
研友_Z33zkZ发布了新的文献求助10
7秒前
风清扬应助社科狗采纳,获得50
11秒前
11秒前
Jasper应助坦率问玉采纳,获得10
12秒前
小蘑菇应助研友_Z33zkZ采纳,获得10
13秒前
静文完成签到,获得积分10
13秒前
澡雪发布了新的文献求助10
14秒前
半糖发布了新的文献求助10
15秒前
17秒前
18秒前
19秒前
21秒前
坦率问玉完成签到,获得积分10
22秒前
YanDongXu发布了新的文献求助10
22秒前
犀利狗发布了新的文献求助10
24秒前
24秒前
陈文学发布了新的文献求助10
25秒前
NexusExplorer应助猪猪hero采纳,获得30
26秒前
26秒前
123发布了新的文献求助10
28秒前
量子星尘发布了新的文献求助10
29秒前
毛豆爸爸发布了新的文献求助10
30秒前
31秒前
科研小学生完成签到,获得积分10
31秒前
犀利狗完成签到,获得积分10
32秒前
ChemPhys完成签到 ,获得积分10
33秒前
33秒前
Owen应助半糖采纳,获得10
34秒前
蔡婧瑶发布了新的文献求助10
35秒前
35秒前
36秒前
猪猪hero发布了新的文献求助10
37秒前
田田田田发布了新的文献求助10
37秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975458
求助须知:如何正确求助?哪些是违规求助? 3519866
关于积分的说明 11199996
捐赠科研通 3256213
什么是DOI,文献DOI怎么找? 1798133
邀请新用户注册赠送积分活动 877386
科研通“疑难数据库(出版商)”最低求助积分说明 806305