Nitrogen-Doped Carbon Dots Enhanced Hydrogen Carbonate-Hydrogen Peroxide Chemiluminescent Reaction and its Application in Ascorbic Acid Sensing

被引:1
作者
Li, Shuji [1 ]
Su, Ke [1 ]
Liu, Xing [1 ]
Jiang, Xiuming [1 ,2 ]
Xiang, Guoqiang [1 ,2 ]
He, Lijun [1 ,2 ]
机构
[1] Henan Univ Technol, Sch Chem & Chem Engn, Zhengzhou 450001, Peoples R China
[2] Henan Key Lab Cereal & Oil Food Safety Inspect & C, Zhengzhou 450001, Henan, Peoples R China
关键词
Grasshopper powder; Carbon dots; Ascorbic acid; Chemiluminescence; Food samples; SENSITIVE DETECTION; QUANTUM DOTS; NANOPARTICLES; SYSTEM;
D O I
10.1007/s10895-024-03868-6
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Nitrogen-doped carbon dots (N-CDs) were prepared by self-exothermic procedure using grasshopper powder as a single precursor. The prepared N-CDs not only have excellent fluorescence properties, but also can catalyze and enhance the ultra-weak chemiluminescence of NaHCO3-H2O2. The reaction conditions of NaHCO3-H2O2-N-CDs CL were optimized. Under the optimal experimental conditions, when AA was added to the NaHCO3-H2O2-N-CDs CL system, AA had a significant inhibitory effect on the CL intensity of NaHCO3-H2O2-N-CDs. There was a good linear relationship between the calculated lg(I0/I) and the concentration of AA (C), and the calibration curve equation was lg(I0/I) = 0.03667 C-0.00708 (mu M). The established CL analysis method has a detection limit of 0.12 mu M for AA and a linear range of 0-50 mu M. The selectivity of CL method was evaluated, and the method was successfully applied to the determination of AA in vegetable and fruit samples. The spiked recoveries were between 88.9% and 118.9%, which indicated that the method was simple, rapid, and sensitive, and had great potential in the determination of AA in foods.
引用
收藏
页码:4689 / 4698
页数:10
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