{"title":"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","authors":"Lizhen Liu, Zhi Mi, Ziying Guo, Junling Wang, Feng Feng","doi":"10.1016/j.microc.2020.104956","DOIUrl":null,"url":null,"abstract":"<div><p>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.</p></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"157 ","pages":"Article 104956"},"PeriodicalIF":4.9000,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.microc.2020.104956","citationCount":"19","resultStr":"{\"title\":\"A label-free fluorescent sensor based on carbon quantum dots with enhanced sensitive for the determination of myricetin in real samples\",\"authors\":\"Lizhen Liu, Zhi Mi, Ziying Guo, Junling Wang, Feng Feng\",\"doi\":\"10.1016/j.microc.2020.104956\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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.</p></div>\",\"PeriodicalId\":391,\"journal\":{\"name\":\"Microchemical Journal\",\"volume\":\"157 \",\"pages\":\"Article 104956\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2020-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.microc.2020.104956\",\"citationCount\":\"19\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microchemical Journal\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0026265X20302447\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microchemical Journal","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0026265X20302447","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
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.
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.