Graphene quantum dots as sensor for phenols in olive oil

被引：57

作者：

Benitez-Martinez, Sandra ^{[1
]}

Valcarcel, Miguel ^{[1
]}

机构：

[1] Univ Cordoba, Dept Analyt Chem, E-14071 Cordoba, Spain

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 197卷

关键词：

Graphene quantum dots; Sensor; Total phenols; Fluorescence quenching; Liquid-liquid extraction; Olive oil; CARBON NANOTUBES; HYDROTHERMAL SYNTHESIS; UP-CONVERSION; FLUORESCENCE; SURFACE; WATER; BLUE; PHOTOLUMINESCENCE; FIBERS; GREEN;

D O I：

10.1016/j.snb.2014.03.008

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

A new method for the determination of the phenol fraction of olive oil is reported. An optical nanosensor based on graphene quantum dots, obtained by pyrolysis of citric acid, was specifically developed for this purpose. The ensuing fluorescence sensing method, which is simple, and highly sensitive and reproducible, was used here to determine gallic acid and oleuropein as model analytes commonly found in olive oils, as well as the phenolic concentration of olive oil real samples. The detection limits were lower than 0.12 mg L-1 and the precision, expressed as relative standard deviation, lower than 1.7%. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：350 / 357

页数：8

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