Determination of Malachite Green in Fish by a Modified MOF-Based Electrochemical Sensor

Cu-based metal-organic frameworks modified by silver (Ag/Cu-MOFs) were in situ fabricated through a one-step direct synthesis. The as-prepared mixed-node MOFs were modified on glassy carbon (GC) electrode, which was utilized as a voltammetric sensor for probing malachite green. Compared with the bar...

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Bibliographic Details
Published in:Food analytical methods 2019-05, Vol.12 (5), p.1246-1254
Main Authors: Zhou, Yanli, Li, Xiaoqiao, Pan, Zhonghao, Ye, Baoxian, Xu, Maotian
Format: Article
Language:English
Subjects:
Analytical Chemistry
Aquaculture
Catalysis
Catalytic activity
Chemical sensors
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Copper
Electrochemistry
Electrodes
Feasibility studies
Food industry
Food safety
Food Science
Glassy carbon
Malachite green
Metal-organic frameworks
Microbiology
Sensors
Silver
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Summary:Cu-based metal-organic frameworks modified by silver (Ag/Cu-MOFs) were in situ fabricated through a one-step direct synthesis. The as-prepared mixed-node MOFs were modified on glassy carbon (GC) electrode, which was utilized as a voltammetric sensor for probing malachite green. Compared with the bare GC electrode, the introduced Ag/Cu-MOF film on the electrode surface dramatically improved the sensitivity of the sensor response according to the accumulation and catalytic activity of Ag/Cu-MOFs for malachite green. The developed electrochemical sensor exhibited a low detection limit of 2.2 nM with a wide linear range of 10–140 nM and high anti-interference ability. The feasibility of the assay was verified by test of malachite green in fish sample. The proposed strategy presents valuable information for the evaluation of the food safety in aquaculture industry.
ISSN:1936-9751
1936-976X
DOI:10.1007/s12161-019-01459-x