Articles


Document Type
Journal article (JA)
Title
Simultaneous detection of malachite & leucomalachite green based on dual template CdTe@MIP via normal and synchronous fluorescence quenching
Author
Yang, Ji(1); Wu, Hao(1); Wu, Ming-Hui(3); Zeng, Jun(1); Lin, Zheng-Zhong(1); Chen, Xiao-Mei(1); Huang, Zhi-Yong(1,2)
Address
(1) College of Food and Biological Engineering, Jimei University, Xiamen; 361021, China; (2) Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen; 361021, China; (3) Department of Chemical and Biochemical Engineering, Xiamen University, Xiamen; 361005, China
RPAddress
Email
ResearchID
ORCID
Journal
Dyes and Pigments
Publisher
Elsevier Ltd
ISSN
0143-7208
Published
2018-08, 155:171-178.
JCR
2
ImpactFactor
3.473
ISBN
Fund_Code
HYMC
HYDD
HYKSRQ
HYJSRQ
HYLWLB
HYJB
Keywords
Cadmium telluride - Carbonate minerals - Diagnosis - Dyes - Energy transfer - Fish - Forster resonance energy transfer - II-VI semiconductors - Nanoprobes - Probes
Abstract
Malachite green (MG) is an industrial dye, but has been once abused in aquaculture for disease treatment. Because MG and its metabolite, leucomalachite green (LMG), present great harm to human health, it is essential to rapidly and accurately detect MG and LMG residues in aquatic products. However, the simultaneous screening of MG and LMG is still a challenge to date. In this work, a dual-template molecularly imprinted polymer (MIP) coated CdTe QDs was developed and applied as a nano-probe to simultaneously detect MG and LMG in fish samples via normal and synchronous fluorescence quenching. The molar ratios of templates (MG and LMG) to monomer (APTES) and cross-linker (TEOS), and the amount of CdTe QDs in the probe preparation were optimized. A normal fluorescence emission at 600 nm could be linearly quenched by MG, while the synchronous fluorescence emission at the wavelength interval of 340 nm could be quenched by both LMG and MG. The detection limits of MG and LMG were 17 nmol L?1and 28 nmol L?1(3σ n = 9), respectively. Based on the equations of Stern-Volmer, MG and LMG could be simultaneously detected without any conversion treatment. The recoveries of MG and LMG in fish samples ranged from 92% to 107% and from 91% to 108%, respectively. The results demonstrated that the as-prepared dual-template CdTe@MIP could be used as a fluorescent probe to rapidly and simultaneously detect MG and LMG in fish samples. ? 2018 Elsevier Ltd
WOS Categories
Accession Number
EI收录号
20181304963399
DOI
10.1016/j.dyepig.2018.03.057
ESI_Type
CHEMISTRY
Collection
EI

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