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Evaluation of polypyrrole/silver/polyethylene glycol nanocomposite sorbent for electroenhanced direct-immersion solid-phase microextraction of carvacrol and thymol from medicinal plants

Citation

Ghiasvand, AR and Abdolhosseini, S and Heidari, N and Paull, B, Evaluation of polypyrrole/silver/polyethylene glycol nanocomposite sorbent for electroenhanced direct-immersion solid-phase microextraction of carvacrol and thymol from medicinal plants, Journal of the Iranian Chemical Society, 15, (11) pp. 2585-2592. ISSN 1735-207X (2018) [Refereed Article]

Copyright Statement

Copyright 2018 Journal of the Iranian Chemical Society

DOI: doi:10.1007/s13738-018-1447-3

Abstract

The unique features of nanostructured polypyrrole, conductivity enhancement effect of silver nanoparticles and high polar adsorptivity of polyethylene glycol were merged into polypyrrole/silver/polyethylene glycol (PPy/Ag/PEG) nanocomposite. It was synthesized and simultaneously coated on the surface of a stainless-steel fiber using an amended electropolymerization procedure. Before coating, the fiber substrate was made porous and sticky by allocating platinum dots on the surface of the stainless-steel fiber using the electrophoretic method. The prepared fiber was applied for the extraction of carvacrol and thymol (the most important antioxidants in medicinal plants) through an electroenhanced direct-immersion solid-phase microextraction (EE-DI-SPME) sampling strategy, followed by GC-FID quantification. To achieve the best efficiency, the effectual experimental variables including pH of sample solution, applied voltage, extraction temperature and time, stirring rate, and ionic strength were investigated. Under the optimal experimental conditions, the calibration curves were linear over the range of 0.530gmL−1 for thymol and 0.0130gmL−1 for carvacrol. The detection limits (3Sb) and relative standard deviation (RSD%, n = 6) were obtained to be 0.15, 0.003gmL−1 and 10.2, 8.7% for thymol and carvacrol, respectively. The results demonstrated the priority of the proposed fiber compared with polypyrrole and polyacrylate fibers, in terms of extraction efficiency, durability and stability. The developed method was successfully employed for the analysis of thymol and carvacrol in medicinal plants.

Item Details

Item Type:Refereed Article
Keywords:electroenhanced direct-immersion solid-phase microextraction, Polypyrrole/silver/polyethylene glycol nanocomposite, Antioxidants, GC-FID
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other Plant Production and Plant Primary Products
Objective Field:Plant Product, Traceability and Quality Assurance (excl. Forest Products)
UTAS Author:Paull, B (Professor Brett Paull)
ID Code:135213
Year Published:2018
Web of Science® Times Cited:2
Deposited By:Chemistry
Deposited On:2019-10-05
Last Modified:2019-11-15
Downloads:0

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