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水中几种光敏物质对布洛芬光解动力学的影响

2021-01-05李富华马杜娟程嘉颖李骞凯周玉辉潘兆琪张妍江学顶刘国光

科技资讯 2021年31期

李富华 马杜娟 程嘉颖 李骞凯 周玉辉 潘兆琪 张妍 江学顶 刘国光

摘  要:布洛芬是一种常用的非甾体抗炎药,在水环境中被广泛检出。光解是布洛芬在水中的主要消除方式之一,其光解动力学受水中溶解性物质的影响。通过模拟光解实验,研究腐植酸、双氧水、丙酮、模拟淡水和模拟海水对布洛芬光解动力学的影响。结果表明,低浓度的腐植酸促进了布洛芬的光解,高浓度则抑制了布洛芬的光解。双氧水明显促进了布洛芬的光解,丙酮对布洛芬光解的影响不大。模拟淡水和模拟海水条件下布洛芬的光解速率为0.001 72 min-1和0.009 28 min-1。

关键词:布洛芬  光敏物质  光解  动力学

中图分类号:X131.2           文献标识码:A        文章编号:1672-3791(2021)11(a)-0000-00

Effects of Several Photosensitive Substances in Water on the Photolysis Kinetics of Ibuprofen

LI Fuhua1  MA Dujuan2  CHENG Jiaying1  LI Qiankai1  ZHOU Yuhui1  PAN Zhaoqi1  ZHANG Yan1  JIANG Xueding1  LIU Guoguang3*

(1.School of Environment and Chemical Engineering, Foshan University, Foshan, Guangdong  Province, 528225  China; 2.Guangdong Jianyan Environmental Monitoring Co., Ltd., Guangzhou, Guangdong  Province, 510630 China; 3.School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong  Province, 510006 China)

Abstract: Ibuprofen is a common nonsteroidal anti-inflammatory drug, which is widely detected in water environment. Photolysis is one of the main elimination methods of ibuprofen in water, and its photolysis kinetics is affected by soluble substances in water. The effects of humic acid, hydrogen peroxide, acetone, simulated freshwater and simulated seawater on the photolysis kinetics of ibuprofen were studied by simulated photolysis experiments. The results showed that low concentration of humic acid promoted the photolysis of ibuprofen, while high concentration inhibited the photolysis of ibuprofen. Hydrogen peroxide significantly promoted the photolysis of ibuprofen, acetone had little effect on the photolysis of ibuprofen. The photolysis rate of ibuprofen in simulated freshwater and simulated seawater were 0.001 72 min-1 and 0.009 28 min-1, respectively.

Key Words: Ibuprofen; Photosensitive substances; Photodegradation; Kinetics

近年來,药品及个人护理品(PPCPs)在水环境中被广泛检出引起了科学家和管理部门的关注。张倩分析了污水处理厂不同工艺对PPCPs的去除情况发现同一个处理工艺对不同PPCPs去除率与同一种PPCPs在不同的处理工艺中去除率差异很大[1]。张艳强调在改进污水处理厂工艺的同时,要健全监管机制,完善尾水排放标准及优控名单,加强PPCPs管控[2]。卫先宁等研究发现城市污水厂再生水中PPCPs的浓度较低,但其环境风险不容忽视[3]。布洛芬(IBP)是全球环境中检出频率最高的非甾体抗炎药之一,同时它被Besse等人界定为ⅠA级化合物[4]。研究表明,布洛芬对很多生物具有毒性作用。布洛芬会引起暴露的非洲尖齿鲶的鱼鳃、肝脏和肾脏的组织病理学损伤[5]。

光化学降解是PPCPs在水环境中的一个重要的削减途径[6-8],其光解速率受水中溶解性物质的影响[9]。……

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