Cu-MOF-199/多壁碳纳米管修饰玻碳电极检测食品包装中迁移的双酚A  

Cu-MOF-199/MWCNTs Composite Modified Glassy Carbon Electrode Determination Migration of Bisphenol A in Food

作　　者：黄迪惠 黄小洲 陈锦阳 张飞吉 叶瑞洪 HUANG Dihui;HUANG Xiaozhou;CHEN Jinyang;ZHANG Feiji;YE Ruihong(Key Laboratory of Measurement and Control System for Coastal Basin Environment,School of Ocean Science and Biochemistry Engineering,Fuqing Branch of Fujian Normal University,Fuqing 350300,China;College of Life Sciences,Fujian Normal University,Fuzhou 350117,China)

机构地区：[1]福建师范大学福清分校海洋与生化工程学院,近海流域环境测控治理福建省高校重点实验室,福建福清350300 [2]福建师范大学生命科学学院,福建福州350117

出　　处：《青岛科技大学学报（自然科学版）》2021年第2期13-21,共9页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：福建省科技厅自然科学基金项目(2018J01675);福建省中青年教师教育科研项目(JA15567).

摘　　要：通过制备Cu-MOF-199/多壁碳纳米管电化学传感器,并将其用于测定食品包装中迁移的双酚A。显示双酚A在磷酸盐缓冲液pH=7.0,扫描速率为100 mV·s^(-1),富集电位为0.3 V,富集时间为100 s,涂层为3层时有良好明显的反应。在优化条件下,双酚A溶度在20~40μmol·L-1范围内与氧化峰电流差有良好的线性关系,检出限为1.75×10^(-8 )mol·L-1,对于实际样品的回收率为91.0%~99.4%。通过上述方法进行实验,结果表明该方法合理可行,4次重复测定BPA的氧化峰电流响应值的相对标准偏差(RSD)为4.2%以内,说明Cu-MOF-199/MWCNTs复合材料修饰玻碳电极有良好的稳定性和重现性,可用于检测食品包装中迁移的双酚A。In this study,Cu-MOF-199/MWCNTs electrochemical sensors were prepared and used to determine the migration of bisphenol A in food packaging.It was shown that bisphenol A had a good and obvious response when the phosphate buffer solution was pH=7.0,the scan rate was 100 mV·s^(-1),the cumulative potential was 0.3 V,and the cumulative time was 100 s.Under optimized conditions,the solubility of bisphenol A in the range of 20-40μmol·L^(-1) has a good linear relationship with the oxidation peak current difference.The detection limit is 1.75×10^(-8) mol·L^(-1).The recovery rate for the actual sample is 91.0%-99.4%.The experiment was carried out through the above method.The results show that the method is reasonable and feasible.The relative standard deviation(RSD)of the oxidation peak current response value of the BPA measured within 4 times is within 4.2%,indicating that the Cu-MOF-199/MWCNTs composite modified glassy carbon electrode It has good stability and reproducibility,and can be used to detect the migration of bisphenol A in food packaging.

关 键 词：双酚A Cu-MOF-199/多壁碳纳米管 修饰电级 循环伏安法 

分 类 号：TS206.4[轻工技术与工程—食品科学]