文献类型：期刊文献

英文题名：High Sensitivity Detection of Copper Ions in Oysters Based on the Fluorescence Property of Cadmium Selenide Quantum Dots

作者：Jiang, Shiqi[1,2];Lu, Zifan[3];Su, Tiantian[3];Feng, Yanting[3];Zhou, Chunxia[3];Hong, Pengzhi[2,3];Sun, Shengli[1];Li, Chengyong[1,2]

机构：[1]Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518108, Guangdong, Peoples R China;[3]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Peoples R China

年份：2019

卷号：7

期号：4

外文期刊名：CHEMOSENSORS

收录：SCI-EXPANDED(收录号：WOS:000505721400017)、、EI(收录号：20243416892651)、Scopus(收录号：2-s2.0-85077607796)、WOS

基金：This research was funded by the National Natural Science Foundation of China (21874029), the Guangdong Yangfan Program (201635018), the Guangdong Special Support Program (2017TQ04N706), the Science and Technology Planning Project of Guangdong Province (2016A020210114), the Science and Technology Planning Project of Shenzhen City (JCYJ20170818111719650), the Industrial Development Special Funds of Dapeng New Area (KY20170209, KY20180202), and the Innovation and Development Project about Marine Economy Demonstration of Zhanjiang City (2017C8B1).

语种：英文

外文关键词：CdSe QDs; oysters; fluorescence property; copper ions

外文摘要：Cadmium selenide (CdSe) quantum dots (QDs) were synthesized by water phase synthesis method using 3-mercaptopropionic acid (3-MPA) as a stabilizer, and they were applied to the detection of copper ions (Cu2+). The results showed that CdSe QDs have excellent selectivity and sensitivity toward Cu2+. The fluorescence intensity of CdSe QDs decreased with the increase of Cu2+ concentration. The linear range was from 30 nM to 3 mu M, and the detection limit was 30 nM. Furthermore, CdSe QDs were used for detecting the concentration of Cu2+ in oysters. The content of Cu2+ was 40.91 mg/kg, which was close to the one measured via flame atomic absorption spectrometry (FAAS), and the relative error was 1.81%. Therefore, CdSe QDs have a wide application prospect in the rapid detection of copper ions in food.