聚乙烯吡咯烷酮纳米银荧光增强测定番茄红素

发布时间：2019-05-19 13:01

【摘要】：合成了聚乙烯吡咯烷酮纳米银,研究了番茄红素对聚乙烯吡咯烷酮纳米银体系的荧光增强效应。考察了缓冲体系、纳米银用量、聚乙二醇浓度、反应时间和温度等因素的影响,建立了测定番茄红素的新方法。在最佳条件下,体系的相对荧光强度与番茄红素浓度呈良好的线性关系,其线性范围为2.0×10-6~8.0×10-5 mol/L,检出限为1.6×10-8 mol/L。方法应用于实际样品检测,回收率为98.29%~109.36%。
[Abstract]:Polyvinylpyrrolidone nano-silver was synthesized and the fluorescence enhancement effect of lycopene on polyvinylpyrrolidone nano-silver system was studied. The effects of buffer system, nano-silver dosage, polyethylene glycol concentration, reaction time and temperature on the determination of lycopene were investigated, and a new method for the determination of lycopene was established. Under the optimum conditions, the relative fluorescence intensity of the system has a good linear relationship with lycopene concentration, and the linear range is 2.0 脳 10 脳 6 脳 8 脳 10 脳 5 mol/L,. The detection limit is 1.6 脳 10 脳 8 mol/L.. The method has been applied to the detection of practical samples with a recovery of 98.29% 鈮，

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