| Cu_2O微球修饰电极对动物源食品中土霉素的电化学测定 |
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| 引用本文： | 孙俊永,常琳,李含笑,刘杨晓. Cu_2O微球修饰电极对动物源食品中土霉素的电化学测定[J]. 信阳师范学院学报(自然科学版), 2019, 0(1): 126-131 |
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| 作者姓名： | 孙俊永 常琳 李含笑 刘杨晓 |
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| 作者单位： | 信阳师范学院化学化工学院;广灵县第一中学校 |
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| 摘 要： | 利用Cu_2O微球修饰玻碳电极研究了土霉素的电化学行为,发现土霉素的氧化是一个受吸附控制的一质子、一电子参与的不可逆过程.在pH 4.8HAc-NaAc缓冲溶液中,开路富集180s后利用方波伏安法发展了高灵敏检测土霉素的电化学方法,线性范围为0.5～210"mol/L,检出限为0.15"mol/L(R_(SN)=3).该方法用于测定动物源食品中土霉素,回收率介于97.4%～107%之间.
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| 关 键 词： | Cu_2O微球 电化学氧化 土霉素 动物源食品分析 |
Electrochemical Determination of Oxytetracycline in Animal-Derived Food based on Cu_2O Microspheres Modified Electrode |
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| Affiliation: | ,College of Chemistry and Chemical Engineering,Xingyang Normal University,No.1Middle School of Guangling County of Shanxi Province |
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| Abstract: | The electrochemical behaviors of oxytetracycline on Cu_2 O microspheres modified glassy carbon electrode were studied,and it was found that the oxidation of oxytetracycline was an adsorption-controlled,one-proton,one-electron,and irreversible process.In pH 4.8 HAc-NaAc buffer solution,an electrochemical method with high sensitivity was developed for the determination of oxytetracycline by using square wave voltammetry after an open-circuit accumulation at 0.4 V.The linear range was 0.5～210 "mol/L and the limit of detection was 0.15 " mol/L(R_(SN)= 3).Finally,this method was applied for the determination of oxytetracycline in animal-derived food,and the recoveries were between 97.4%～107%. |
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| Keywords: | Cu_2O microspheres electrochemical oxidation oxytetracycline animal-derived food analysis |
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