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Citation: ZHANG Chun-Yan, WANG Pei-Long, SHI Lei, SU Xiao-Ou. Molecularly Imprinting Polymer Electrochemical Sensor Based on Structure of Metal Organic Frameworks for Determination of Phenylethanolamine A in Swine Urine[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(12): 1859-1866. doi: 10.11895/j.issn.0253-3820.160451 shu

Molecularly Imprinting Polymer Electrochemical Sensor Based on Structure of Metal Organic Frameworks for Determination of Phenylethanolamine A in Swine Urine

1.
School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;
2.
Key Laboratory of Agro-product Safety and Quality, Ministry of Agriculture, Institute of Quality Standards & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received Date: 12 June 2016
Revised Date: 17 August 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21576128).

A supersensitive molecular imprinting polymer (MIP) electrochemical sensor based on the structure of metal organic frameworks (MOFs) for detection of phenylethanolamine A (PEA) in swine urine samples was developed. In this sensor, PEA was used as template, p-aminothiophenol was selected as functional monomer and organic ligand, and Au nanoparticles were used as metal center to fabricate a composite membrane with molecular recognition property on gold electrode by in situ electrochemical polymerization. The characterizations of modified electrode were performed with electrochemical platform and scanning electronic microscope. The analytical conditions including scan rate, pH, elution time and incubation time and so on were optimized. Under the optimum conditions, the limit of the developed MOFs-MIP electrochemical sensor for the detection for PEA was as low as 1.0×10^-13 mol/L and the linear rang was from 1.0×10^-13 to 1.0×10^-9 mol/L with correlation coefficient of 0.996. The recoveries of PEA were from 92.7% to 108.4% under different spiked levels of PEA in animal urine and the relative standard deviation (RSD) was below 8.0%. The developed method possessed many advantages such as high sensitivity, specificity and stability.
- Phenylethanolamine A,
- Molecular imprinting polymer,
- Metal organic frameworks,
- Electrochemical sensor
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