[1]李俣珠,杨豪,蒋熊丽,等.基于Mn掺杂ZnS量子点室温磷光法检测食品中兽药头孢哌酮钠残留[J].江苏农业学报,2019,(05):1209-1215.[doi:doi:10.3969/j.issn.1000-4440.2019.05.030]
　LI Yu-zhu,YANG Hao,JIANG Xiong-li,et al.Determination of cefoperazone sodium residues in foods based on the room temperature phosphorescence of Mn-doped ZnS quantum dots[J].,2019,(05):1209-1215.[doi:doi:10.3969/j.issn.1000-4440.2019.05.030]
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基于Mn掺杂ZnS量子点室温磷光法检测食品中兽药头孢哌酮钠残留()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年05期
页码:
1209-1215
栏目:
加工贮藏·质量安全
出版日期:
2019-10-31

文章信息/Info

Title:
Determination of cefoperazone sodium residues in foods based on the room temperature phosphorescence of Mn-doped ZnS quantum dots
作者:
李俣珠; 杨豪; 蒋熊丽; 黄龙; 李金蔚; 刘潘; 吴施未; 陈姝娟
(四川农业大学食品学院，四川雅安625014)
Author(s):
LI Yu-zhu; YANG Hao; JIANG Xiong-li; HUANG Long; LI Jin-wei; LIU Pan; WU Shi-wei; CHEN Shu-juan
(College of Food Science, Sichuan Agricultural University, Ya′an, 625014, China)
关键词:
水相共沉淀法; Mn掺杂ZnS量子点; 室温磷光; 头孢哌酮钠
Keywords:
water-phase coprecipitation; Mn-doped ZnS quantum dots; room temperature phosphorescence (RTP); cefoperazone sodium
分类号:
TS201.6
DOI:
doi:10.3969/j.issn.1000-4440.2019.05.030
文献标志码:
A
摘要:
以水相共沉淀法合成了L-半胱氨酸(L-cys)修饰的Mn掺杂ZnS量子点(L-cys-Mn∶ZnS QDs)。基于头孢哌酮钠可通过电荷转移猝灭L-cys修饰的Mn∶ZnS量子点室温磷光的原理，建立了一种简单、快速检测食品中头孢哌酮钠微量残留的新方法。结果表明：当pH=6.4，反应时间为40 min时，量子点的磷光猝灭程度与头孢哌酮钠浓度呈良好的线性关系，线性范围为0.025～2.000 μg/ml，相关系数(r)为0.997 3，方法检出限为0.016 μg/ml，相对标准偏差为2.3%。该方法应用于牛奶和蜂蜜中头孢哌酮钠测定的加标回收率分别为93.8%～102.1%和95.5%～99.6%。
Abstract:
The Mn-doped ZnS quantum dots (QDs) modified by L-Cysteine (L-cys) were prepared using water-phase coprecipitation. Based on that cefoperazone sodium could quench the room-temperature phosphorescence (RTP) of L-cys-Mn: ZnS quantum dots through charge transfer, a relatively simple and fast detection method for tracing cefoperazone sodium in food was developed. The experimental results showed that， at pH 6.4 and a reaction time of 40 min， the phosphorescence quenching degree of QDs had a linear relationship(r=0.997 3) with cefoperazone sodium in the concentration range of 0.025-2.000 μg/ml. The detection limit of the method was 0.016 μg/ml，and the relative standard deviation was 2.3%. The method has been successfully applied for the detection of cefoperazone sodium in the milk and honey with the recoveries of 93.8%-102.1% and 95.5%-99.6%, respectively.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2019-04-05 基金项目：成都市技术创新研发项目(2018-YF05-00765-SN)；四川省青年软件创新工程项目(2019100)；国家级大学生创新创业训练计划项目(201810626003)；科研兴趣培养计划项目(2019531、2019532) 作者简介：李俣珠(1996-)，女，四川广元人，硕士研究生，主要从事食品快速检测研究。(E-mail) lyz611@foxmail.com 通讯作者：陈姝娟，(E-mail)chenshujuan1@163.com
更新日期/Last Update: 2019-11-11