mip‑spme extraction fiber and extraction platform and application

Abstract

The invention relates to the fields of drug residue monitoring and analyzing technology and new materials, in particular to an MIP-SPME (molecularly imprinted polymer-solid phase microextraction) fiber for selectively identifying and measuring triazole pesticides, an extraction platform and an application. The MIP-SPME fiber comprises a substrate material and a tebuconazole-MIP coating located on the surface of the substrate material, wherein the substrate material is a metal material, and the tebuconazole-MIP coating is immobilized on the surface of the substrate material in a mode of electrochemical polymerization. The SPME coating prepared with the in-situ electrochemical polymerization method has the characteristics of controllable film thickness and homogeneity of preparation; a metal Pt wire is adopted as the substrate material, so that the defect that a quartz fiber is easy to break is overcome; meanwhile, with the introduction of the molecular imprinting technology, the target selectivity of the SPME is greatly improved.

Description

Technical field [0001] The invention relates to the fields of drug residue monitoring and analysis technology and new materials, in particular to a MIP-SPME extraction fiber with selective identification and determination of triazole pesticides and an extraction platform and application. Background technique [0002] As a green sample pretreatment technology, solid phase microextraction (Solid Phase Microextraction, SPME) technology integrates enrichment and purification, has the advantages of simple operation, no solvent, and easy combination with detection equipment. The core of SPME technology lies in the coating of the extracted fiber. According to the volatility and polarity of the target analyte, the material of the extracted fiber is selected reasonably, which can effectively enrich the target compound and realize fast and efficient sample detection. At present, there are many commercialized SPME coatings. However, there are many kinds of compounds to be analyzed, and thei...

AI Technical Summary

Problems solved by technology

The technical problem that the present invention aims to solve is: (1) select metal wire as the base material of SPME extraction fiber, solve the defect that the traditional base material quartz fiber is easy to break and have a short service life; (2) use selective MIP as the coating material (3) Select a new coating material immobilization method—electropolymerization method to solve the defects of complicated preparation process and poor reproducibility of other methods

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