碳点-金簇荧光法检测酒精度的研究  

Fluorescence detection of alcohol strength based on carbon dots and Au nanoclusters

作　　者：徐泽李波 刘晓琳 邹宇 任旺 张英 Xu Ze Li-bo;Liu Xiao-lin;Zou-Yu;Ren Wang;Zhang Ying(College of Chemistry and Environmental Engineering,Sichuan University of Science and Engineering,Zigong 643000,China)

机构地区：[1]四川轻化工大学化学与环境工程学院,四川自贡643000

出　　处：《化学传感器》2024年第2期46-54,共9页Chemical Sensors

基　　金：四川省自然科学基金面上项目(2022NSFSC0103);乡村低成本环境治理技术四川省高校重点实验室开放项目(XCH2022ZB-04);四川轻化工大学大学生创新基金项目(S20221062209)。

摘　　要：以水热法分别合成发红色荧光的碳量子点(CDs)和金簇,将两种荧光探针混合溶液用于酒精度的检测,并表征了碳点+金簇混合溶液在不同酒精度中的SEM。实验结果表明,将两种荧光分子探针加入不同酒精度的溶液中,荧光发射峰强度随着酒精度的增加呈现规律性变化,据此可简便快捷检测酒精度。根据460 nm、375 nm激发波长下样品溶液在590 nm处的荧光强度之和除以2的值与酒精度在0%-90%范围内呈良好的线性关系,并对消毒酒精样品进行了检测,酒精度误差在±0.93范围内。此外,根据486 nm激发波长下样品溶液在589 nm处的荧光强度值与酒精度在10%-90%范围内呈线性关系,并对消毒酒精样品进行了检测,酒精度误差在±1.7范围内。Carbon quantum dots(CDs)and gold nanoclusters(AuNCs)are synthesized by hydrothermal method.The prepared two kinds of probes emit red fluorescence,and the mixture of CDs and AuNCs are used to detect alcohol strength.SEM characteristics of the mixed probes in different alcohol strength are investigated.The experimental results show that the fluorescence emission intensity of the mixture probes changes regularly with the increase of alcohol strength,thus the alcohol strength can be easily and quickly detected.When respective excitation with 460 nm and 375 nm,half the sum of fluorescence emission intensity at 590 nm is linearly proportional to alcohol strength in the range of 0%to 90%,and the detection error of the sample alcohol was within±0.93.Moreover,when excitation with 486 nm,the fluorescence emission intensity at 589 nm is positively correlated with alcohol strength in the range of 10%to 90%,and the sample alcohol is tested with an error of±1.7.

关 键 词：酒精度检测 荧光检测 碳点 金簇 

分 类 号：TQ223.122[化学工程—有机化工] O657.3[理学—分析化学]