聚鸟氨酸电化学传感器对食品中糠醛的灵敏检测  

Sensitive determination of furfural in food using poly ornithine electrochemical sensing

作　　者：朱琪 马心英 石广革 于欢 王雪薇 孙章华 ZHU Qi;MA Xin-ying;SHI Guang-ge;YU Huan;WANG Xue-wei;SUN Zhang-hua(College of Chemistry and Chemical Engineering,Heze University,Heze 274015 China;Heze Institute for Food and Drug Control,Heze 274000,China;Environmental Monitoring Central Station of Heze,Heze 274000,China)

机构地区：[1]菏泽学院化学化工学院,山东菏泽274015 [2]菏泽市食品药品检验检测研究院,山东菏泽274000 [3]山东省菏泽生态环境监测中心,山东菏泽274015

出　　处：《化学研究与应用》2025年第3期706-711,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21875059)资助;菏泽学院大学生创新创业训练计划项目(2023053,2024199)资助。

摘　　要：制备了聚L-鸟氨酸修饰玻碳电极,并对糠醛进行了测定。结果表明在此修饰电极上,聚L-鸟氨酸催化了糠醛的电化学还原反应。实验对该电极的制备条件以及测试条件进行了优化。糠醛的还原峰电流与其浓度在2.00×10^(-7)~1.00×10^(-4)mol·L^(-1)浓度范围内成线性关系,相关系数为0.9987,检出限为2.50×10^(-8)mol·L^(-1),加标回收率为97.5%~101%。该修饰电极具有良好的灵敏度、选择性和稳定性,可用于糠醛含量的测定。A poly-L-ornithine modified glassy carbon electrode was prepared and used for the determination of furfural.The results showed that the modified electrode catalyzed the electrochemical reduction of furfural.The preparation conditions of the electrode and the testing parameters were optimized through experiments.The reduction peak current of furfural exhibited a linear relationship with its concentration in the range of 2.00×10^(-7)to 1.00×10^(-4)mol·L^(-1),with a correlation coefficient of 0.9987,a detection limit of 2.50×10^(-8)mol·L^(-1),and a recovery rate ranging from 97.5%to 101%.The modified electrode demonstrated excellent sensitivity,selectivity,and stability,making it suitable for the determination of furfural content.

关 键 词：鸟氨酸 食品 糠醛 

分 类 号：O657.1[理学—分析化学]