基于碳量子点的无标记荧光传感器对实际样品中杨梅素的检测具有增强的灵敏度

IF 4.9 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchemical Journal Pub Date : 2020-09-01 DOI:10.1016/j.microc.2020.104956

Lizhen Liu, Zhi Mi, Ziying Guo, Junling Wang, Feng Feng

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引用次数: 19

摘要

本研究设计了一种基于碳量子点(CQDs)的新型无标记荧光传感器，用于杨梅素的检测。以天冬氨酸和尿素为前驱体，采用绿色、简便的微波辅助加热法制备了CQDs。所制备的CQDs具有较强的荧光性和良好的水溶性。传感器的传感原理是杨梅素通过内滤效应(IFE)猝灭CQDs荧光。该CQDs传感器对杨梅素敏感，线性检测范围为1 ~ 80µM，低检出限为18.4 nM。潜在干扰物质对杨梅素的测定无影响。该传感器操作简单、成本低、准确度高，成功地应用于红酒样品中杨梅素的测定。结果表明，基于CQDs的传感器在实际样品检测中具有广阔的应用前景。

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A label-free fluorescent sensor based on carbon quantum dots with enhanced sensitive for the determination of myricetin in real samples

In this research, a novel label-free fluorescent sensor for the determination of myricetin was designed based on carbon quantum dots (CQDs). The CQDs were prepared via green and straightforward microwave-assisted heating method using aspartic acid and urea as precursors. The prepared CQDs showed strong fluorescence and good solubility in water. The sensing principle of sensor is the quenching of CQDs fluorescence by myricetin via inner filter effect (IFE). The developed CQDs sensor was sensitive to myricetin with a wide linear detection range of 1 to 80 µM and a low limit of detection (LOD) of 18.4 nM. The potential interfering substances showed no influence on the determination of myricetin. Furthermore, the proposed sensor based on CQDs was successfully applied for the determination of myricetin in red wine samples and exhibited simple operation, low cost and high accuracy. The results indicated our developed sensor based on CQDs has great application prospects for myricetin detection in real sample analysis.

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来源期刊

Microchemical Journal 化学-分析化学

CiteScore

8.70

自引率

8.30%

发文量

1131

审稿时长

1.9 months

期刊介绍： The Microchemical Journal is a peer reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Microchemical Journal publishes articles which are at the forefront of modern analytical chemistry and cover innovations in the techniques to the finest possible limits. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry and titrimetry as well as established instrumentation methods such as flame and graphite furnace atomic absorption spectrometry, gas chromatography, and modified glassy or carbon electrode electrochemical methods will be considered, provided they show significant improvements and novelty compared to the established methods.