基于碳量子点荧光恢复的三聚氰胺测定方法

发布时间：2018-02-05 02:20

本文关键词： 碳量子点荧光恢复测定三聚氰胺　出处：《发光学报》2017年07期 　论文类型：期刊论文

【摘要】：在碳量子点溶液中加入汞离子,量子点的荧光被猝灭,加入三聚氰胺后荧光恢复。据此,建立了基于碳量子点荧光恢复测定三聚氰胺的新方法并应用于实际样品的分析。研究结果表明,在汞离子和碳量子点浓度之比为15∶10000且碳量子点浓度为4.0 g/L、pH值为7.5的实验条件下,方法的线性范围为3.0~60.0mg/L,检出限(3σ/k)为2.2 mg/L。方法应用于实际样品测定时,其回收率为95%~103%。
[Abstract]:The fluorescence of quantum dots was quenched when mercury ions were added to the solution of carbon quantum dots, and the fluorescence recovered after adding melamine. A new method for the determination of melamine based on carbon quantum dot fluorescence recovery was established and applied to the analysis of real samples. When the ratio of mercury ion to carbon quantum dot concentration is 15: 10 000 and the concentration of carbon quantum dot is 4.0 g / L ~ (-1) pH 7.5. The linear range of the method is 3.0 ~ 60.0 mg / L and the detection limit is 2. 2 mg / L. When the method is applied to the determination of real samples, the recovery is 95% and 103%.
【作者单位】：广西大学化学化工学院广西生物炼制重点实验室;
【基金】：广西自然科学基金(2014GXNSFAA118328) 广西生物炼制重点实验室开放基金(GXKLB-2) 广西大学大学生创新创业训练计划(201610593162)资助项目~~
【分类号】：O626;O657.3
【正文快照】： Determination of Melamine Based on FluorescenceRecovery of Carbon Quantum DotsSU An-mei,YU Shu-yi,QIN Xiu,SHEN Yan-ling,ZHONG Qing-mei,WANG Yi-lin*(Guangxi Key Laboratory of Biorefinery,School of Chemistry and Chemical Engineering,Guangxi University,Nann

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