摘要
扑热息痛是一种非甾体抗炎药,本文研究了次氯酸钠-溴离子体系对扑热息痛的氧化降解。为了对比次氯酸钠和次氯酸钠-溴离子体系对水中扑热息痛的氧化降解作用,进行了两种氧化体系的对比研究。结果表明,次氯酸钠-溴离子体系对扑热息痛的氧化反应速率明显快于次氯酸钠体系,且加入的溴离子浓度越大反应速率越快。次氯酸钠体系、次氯酸钠-溴离子体系中TOC的去除率都显著滞后于扑热息痛降解率,表明两体系都产生了比扑热息痛更难降解的中间产物,次氯酸钠-溴离子体系中TOC的去除率略高于次氯酸钠体系。pH值对次氯酸钠-溴离子体系的反应速率有影响,pH值越低速率越快。扑热息痛的初始浓度对氧化反应有影响,初始浓度越低的氧化降解率越高,达到平衡降解率的时间越短。
Paracetamol is a non-steroidal anti-inflammatory drug（ NSAID）. In this study,contrast tests were conducted to evaluate the oxidization of paracetamol by a sodium hypochlorite system and a sodium hypochloritebromide ion system. The results showed that the oxidization of paracetamol by sodium hypochlorite-bromide ion system was faster than that by the sodium hypochlorite system,and the reaction rate increased with the bromide ion concentration. The total organic carbon（ TOC） concentration decreased slightly in both systems,showing that some refractory intermediate products were formed in both cases. According to the experimental results,the pH substantially influenced the oxidation rate of paracetamol in the sodium hypochlorite-bromide ion system,with the reaction rate decreasing with increasing pH. Additionally,a lower initial concentration of paracetamol corresponded to a higher degradation rate and reduced the time required for the reaction to reach equilibrium.
作者
潘夏玲
张铭辉
李富华
黄军磊
陈平
张利朋
吕文英
姚琨
刘国光
PAN Xialing ZHANG Minghui LI Fuhua HUANG Junlei CHEN Ping ZHANG Lipeng LYU Wenying YAO Kun LIU Guoguang(School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第2期833-838,共6页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(21377031)
广东省科技计划资助项目(2013B020800009)
关键词
扑热息痛
次氯酸钠
溴离子
氧化
paracetamol
sodium hypochlorite
bromide ion
oxidization
