上海交通大学学报

上海交通大学学报（自然版）

• 环境科学 • 上一篇    下一篇

水环境中头孢他啶降解行为规律探讨

顾佳萍，王朋华，袁涛，李金花，周保学
  

  1. (上海交通大学 环境科学与工程学院， 上海 200240)
  • 收稿日期:2008-10-13 修回日期:1900-01-01 出版日期:2010-11-30 发布日期:2010-11-30

Degradation Behavior of Ceftazidime in Aquatic Environment

GU Jiaping,WANG Penghua,YUAN Tao,LI Jinhua,ZHOU Baoxue
  

  1. (School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2008-10-13 Revised:1900-01-01 Online:2010-11-30 Published:2010-11-30

摘要： 利用高效液相色谱分析技术，研究了水环境中头孢他啶的降解行为规律，考察的影响因素包括温度、pH、水体类型、水体是否灭菌及光照等.结果表明，头孢他啶在试验条件下的降解过程符合一级动力学方程，半衰期为1.83 d.温度从5 ℃升高到45 ℃，头孢他啶降解速率加快了38.27倍；pH值从5升高到9，其降解速率加快了13.03倍；在污水中降解也较快.本研究为头孢他啶在水环境中的行为规律探讨和生态风险评价提供了基础数据.

关键词: 头孢类抗生素, 水环境, 头孢他啶, 降解, 高效液相色谱法

Abstract: The degradation behavior of ceftazidime in water was studied using highperformance liquid chromatography. Experiments were conducted under conditions with different temperature, pH, water samples, sterile & nonsterile and light. The results show that the standard degradation kinetic process can be described by the firstorder reaction (halflife = 1.83 d). Increasing temperature (from 5 to 45 ℃) or pH (5 to 9) can accelerate degradation of ceftazidime (38.27 times for temperature and 13.03 times for pH, respectively). The degradation rate of ceftazidime in wastewater is relatively high among the tested samples. This study provides some fundamental data for assessing the behavior and ecological risk of ceftazidime in aquatic environment.

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