基于“关开”型掺杂碳量子点检测食用油中特丁基对苯二酚的研究  

Determination of Tert-butylhydroquinone in Edible Oil Based on “Off-On” Carbon Quantum Dots

作　　者：包泽伟 林建原[1] 于佩斓 郭善才 蒋力豪 Bao Zewei;Lin Jianyuan;Yu Peilan;Guo Shancai;Jiang Lihao(Zhejiang Wanli University,Ningbo 315100)

机构地区：[1]浙江万里学院,宁波315100

出　　处：《中国粮油学报》2024年第1期212-217,共6页Journal of the Chinese Cereals and Oils Association

基　　金：浙江省“生物工程”一流学科开放基金资助项目(KF2021004);浙江省“生物工程”一流学科学生创新项目(CX2022001、CX2022044)。

摘　　要：将柠檬酸(CA)为碳源与三羟甲基氨基甲烷(Tris)通过一步水热法合成含氮碳量子点(N-CQDs)。采用紫外光谱、红外光谱与荧光光谱手段分析其结构与光谱特性。研究发现,Fe^(3+)能“关闭”N-CQDs的荧光,特丁基对苯二酚(TBHQ)的加入使得荧光重新“打开”,据此建立“关-开”型荧光探针测定TBHQ的新方法。结果表明,荧光强度与TBHQ质量浓度在1.00~33.24μg/mL范围内成良好的线性关系,回归方程y=0.283x+72.295,食用油样品加标检测回收率为90.51%~105.80%。该方法可用于食用油中TBHQ的快速分析检测。Nitrogen-containing carbon quantum dots(N-CQDs)were synthesized with citric acid(CA)as carbon source and tris(hydroxymethyl)aminomethane(Tris)by a one-step hydrothermal method.Its structure and spectral characteristics were analyzed by ultraviolet spectrum,infrared spectrum and fluorescence spectrum.It was found that Fe^(3+) could“turn off”the fluorescence of N-CQDs,and the addition of tert-butylhydroquinone(TBHQ)can make the fluorescence“turn on”again.On this basis,a new method for the determination of TBHQ was established.The results indicated that there was a good linear relationship between fluorescence intensity and TBHQ mass concentration in the range of 1.00~33.24μg/mL.The regression equation was y=0.283x+72.295.The recoveries of oil samples were 90.51%~105.80%.This method could be used for rapid analysis and detection of TBHQ in edible oil.

关 键 词：掺杂碳量子点 TBHQ 一步水热法 

分 类 号：TS227[轻工技术与工程—粮食、油脂及植物蛋白工程]