金霉素的水解动力学研究  

Hydrolysis Kinetics of the Chlortetracycline

作　　者：郑丽英[1] 

机构地区：[1]湖南文理学院化学化工学院,湖南常德415000

出　　处：《广州化工》2010年第12期182-183,191,共3页GuangZhou Chemical Industry

摘　　要：应用紫外分光光度法研究了金霉素在不同温度,不同酸碱条件下及不同水生环境中金霉素的降解情况。结果表明,金霉素较易水解,其水解速率受pH和温度的影响较大。在碱性及中性条件下的水解速率明显大于酸性条件,而高温(70℃)条件下的水解速率远大于室温(20℃);金霉素进入环境水体后,由于各种降解过程综合作用的结果,比用水解试验得出的降解速率要快很多。The degradation action of the Chlortetracycline under different temperature and pH conditions were studied using UV spectrophotometry.The hydrolysis rate of Chlortetracycline was strongly affected by pH and temperature.Hydrolysis rate under basic conditions and neutral conditions were significantly greater than that under acid conditions,and hydrolysis rate at high temperature of 70℃ greatly exceeded that under low temperature of 20℃.After Chlortetracycline entering into the water,its degradation rate was much lower than the pilot due to the results of many combined effects of various degradation processes.And after it entering into a bit acidic and low temperature groundwater,not only the hydrolysis,but also the biodegradation was much lower than the surface water.Therefore,hydrolysis rate of groundwater was much lower than surface water.

关 键 词：金霉素 水解 紫外分光光度法 动力学 模拟水生环境 

分 类 号：X832[环境科学与工程—环境工程]