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Position: Home > Articles > Determination of Ofloxacin Residues in Fish Musculature by Spectrofluorimetry FOOD SCIENCE 2007,28 (8) 386-389

荧光光度法测定鱼肉中的氧氟沙星残留

作  者:
任乃林;郭祥群
单  位:
厦门大学化学化工学院化学系现代分析科学教育部重点实验室
关键词:
氧氟沙星;荧光光度法;鲫鱼;鳗鱼;鲤鱼;罗非鱼;残留
摘  要:
采用荧光光度法测定了鲫鱼、鳗鱼、鲤鱼和罗非鱼肌肉组织中的氧氟沙星药物残留量。样品用酸性乙腈提取,正己烷脱脂,水相在B-R(pH4.0)缓冲溶液中,激发波长λex294nm,荧光波长λem496nm下用荧光光度法测定其中的氧氟沙星含量,氧氟沙星的线性范围0.03~0.20μg/ml,相关系数r=0.9929,检出限为0.005μg/ml。回收率为76.0%~94.5%。日内变异系数为2.14%~6.50%,日间变异系数为3.02%~9.78%。
译  名:
Determination of Ofloxacin Residues in Fish Musculature by Spectrofluorimetry
作  者:
REN Nai-lin1,2,GUO Xiang-qun1 (1.Key Laboratory of Analytical Sciences, Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361000, China; 2.Department of Chemistry,Hanshan Normal University,Chaozhou 521041, China)
关键词:
ofloxacin;spectrofluorimetry;crucian;eel;carp;tilapia;residues
摘  要:
The spectrofluorimetric method is described for assaying ofloxacin in musculature of crucian, eel, carp and tilapia. The ofloxacin in fish samples was extracted with acidic acetonitrile and defatted with hexane. The aqueous phase was determined by spectrofluorimetry using Briston-Robinson buffer solution(pH 4.0) and detected at λex 294nm,λem 496nm. The linear range of the concentration of ofloxacin is 0.03~0.20μg/ml with r=0.9929. The limit of detections(LOD) is 0.005μg/ml. The recoveries of ofloxacin is 76.0% to 94.5%. The variation coefficient intra assay is 2.14% to 6.50% and inter assay is 3.02% to 9.78%。

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