Green one-step synthesis of N-doped carbon quantum dots for fluorescent detection of lemon yellow in soft drinks

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2024-04-16 DOI:10.1016/j.saa.2024.124305

Xiu-Juan Jiang , Yuan Ma , You Zhou , Rong-Dan Xiao , Yi-Jie Meng , Ye-Hou , Ben-Ting Xie , Lin-Hong Wu , De-Hong Zhao

引用次数: 0

Abstract

A new fluorescent sensor for the determination of lemon yellow was developed based on nitrogen-doped carbon quantum dots (N-CQDs), which were prepared via a hydrothermal method with dried pomelo peel and L-tyrosine. The N-CQDs exhibited the blue fluorescence with a quantum yield of 28 %. The sensing principle of N-CQDs was quenched by lemon yellow via static quenching. The potential interfering substances showed no influence on the detection of lemon yellow. The limit of detection was 0.023 mg/L and lower than that of national standard. Furthermore, the synthesized N-CQDs have been successfully applied to the measurement of lemon yellow in real samples. Hence, the N-CQDs would be a promising sensor in food analysis.

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一步法绿色合成用于荧光检测软饮料中柠檬黄的 N 掺杂碳量子点

本研究以掺氮碳量子点（N-CQDs）为基础，开发了一种测定柠檬黄的新型荧光传感器，该量子点是用干柚子皮和 L-酪氨酸通过水热法制备的。N-CQDs 发出蓝色荧光，量子产率为 28%。N-CQDs 的传感原理是通过静态淬火被柠檬黄淬灭。潜在的干扰物质对柠檬黄的检测没有影响。检测限为 0.023 mg/L，低于国家标准。此外，合成的 N-CQDs 已成功应用于实际样品中柠檬黄的检测。因此，N-CQDs 在食品分析中是一种很有前途的传感器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.