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Reference type: Journal
Authors: Zhou C, Chen JX, Dang XP, Ma XW, Ai YH, Huang JL, Chen HX
Article Title: A Selective Joint Determination of Salicylic Acid in Actinidia chinensis Combining a Molecularly Imprinted Monolithic Column and a Graphene Oxide Modified Electrode.
Publication date: 2018
Journal: Analytical Sciences
Volume: 34
Issue: (7)
Page numbers: 823-829.
DOI: 10.2116/analsci.18P025
Alternative URL: https://www.jstage.jst.go.jp/article/analsci/34/7/34_18P025/_article/-char/en

Abstract: A new combination between selective polymer monolith microextraction (PMME) and sensitive differential pulse voltammetry (DPV) was developed for the determination of the phytohormone salicylic acid (SA) in Actinidia chinensis. A molecularly imprinted monolithic column (MIMC) thermally in-situ polymerized in a micropipette tip by using SA as a template, 4-vinyl pyridine (4-VP) as a functional monomer and ethylene glycol dimethacrylate (EGDMA) as a cross-linker in the mixed porogen of toluene and dodecanol, was employed for the microextraction of SA. The prepared MIMC was characterized by a Fourier transform infrared spectrometer (FI-TR), scanning electron microscope (SEM) and thermo gravimetric analysis (TGA). The results confirmed the binary continuous structure of the porous network. The extracted SA was determined by DPV on a graphene oxide (GO) modified electrode. The joint conditions between MIMC and DPV were investigated practically. Under the optimum conditions, SA could be determined selectively and sensitively in a linear range from 0.1 to 60.0 μg g-1. The limit of detection was 0.03 μg g-1 and the recoveries were between 86.2 and 105.2%. The proposed joint method was successfully used to determine SA in Actinidia chinensis
Template and target information: salicylic acid, SA, 2-hdroxybenzoic acid
Author keywords: salicylic acid, molecularly imprinted monolithic column, Polymer monolith microextraction, Graphene oxide, Actinidia chinensis

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