文献类型：期刊文献

中文题名：紫胶基CQDs用于检测盐酸四环素

英文题名：Shellac?based CQDs were Used to Detect Tetracycline Hydrochloride

作者：徐红艳[1] 叶金枝[2] 张琦[3] 刘佳佳[1] 刘兰香[4]

第一作者：徐红艳

机构：[1]昆明理工大学津桥学院理工学院,云南昆明650500;[2]西南林业大学化学工程学院,云南昆明650224;[3]玉溪市农产品质量安全检验检测中心,云南玉溪653100;[4]中国林业科学研究院资源昆虫研究所,云南昆明650233

年份：2022

卷号：42

期号：4

起止页码：81-87

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：云南省大学生创新训练项目(201913329005)。

语种：中文

中文关键词：漂白紫胶;碳量子点;检测;盐酸四环素

外文关键词：bleached shellac;carbon quantum dots;detection;tetracycline hydrochloride

分类号：TQ35

摘要：以漂白紫胶为原料,采用水热法一步合成水溶性的可发射蓝色荧光的紫胶基碳量子点(shellac-CQDs)。通过傅里叶红外光谱(FT-IR)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)、动态光散射粒度(DLS)分析仪等对其组成和结构进行表征,分析结果显示shellac-CQDs主要含有C和O元素,是由芳香环结构和大量含氧官能团构成,平均粒径2.0 nm。光谱测试结果表明:shellac-CQDs的荧光最大激发波长和发射波长分别为320和432 nm,紫外-可见光谱(UV-Vis)中的最大吸收波长为289 nm。基于shellac-CQDs良好的荧光性能及盐酸四环素对其荧光的减弱作用,建立了以shellac-CQDs为荧光传感器检测盐酸四环素的新方法。shellac-CQDs荧光峰面积的变化值与盐酸四环素质量浓度位于0.02~0.10 g/L范围内呈现良好的线性关系,该方法的检出限为0.01 g/L;在自来水或饲料中盐酸四环素检测的初步应用结果发现:样品的回收率在96.9%~107.7%之间,相对标准偏差(RSD)在1.9%~5.5%之间,说明该方法准确性较高,重复性较好,具有潜在实际应用价值。
Using bleached shellac as raw material,water soluble shellac?based carbon quantum dots(shellac?CQDs)with blue fluorescence were synthesized by hydrothermal and one?step synthesis method.Their composition and structure were characterized by Fourier transform infrared spectroscopy(FT?IR),X?ray photoelectron spectroscopy(XPS),transmission electron microscopy(TEM)and dynamic light scattering(DLS).The analysis results showed that shellac?CQDs mainly contained C and O elements,which were composed of aromatic ring structure and a large number of oxygen?containing functional groups,with an average particle size of 2.0 nm.The spectral tests showed that the maximum excitation wavelength and emission wavelength of shellac?CQDs were 320 and 432 nm,respectively.The maximum absorption wavelength in the UV?Vis spectrum was 289 nm.Based on the good fluorescence properties of shellac?CQDs and the quenching effect of tetracycline hydrochloride on its fluorescence,a new method for the detection of tetracycline hydrochloride using shellac?CQDs as fluorescence sensor was established.The results showed that there was a good linear relationship between the fluorescence peak areas and the concentration of tetracycline hydrochloride in the range of 0.02-0.10 g/L.The detection limit of this method was 0.01 g/L.It has been preliminarily applied to the detection of tetracycline hydrochloride in tap water or feed,and the recovery rate of the samples was 96.9%-107.7%,and the relative standard deviation(RSD)was between 1.9%and 5.5%,indicating that this method has high accuracy,good repeatability and potential practical application value.