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Automated multisyringe stir bar sorptive extraction using robust montmorillonite/epoxy-coated stir bars

Citation

Ghani, M and Sararji, M and Maya, F and Cerda, V, Automated multisyringe stir bar sorptive extraction using robust montmorillonite/epoxy-coated stir bars, Journal of Chromatography A, 1445 pp. 10-18. ISSN 0021-9673 (2016) [Refereed Article]

Copyright Statement

2016 Elsevier B.V. All rights reserved.

DOI: doi:10.1016/j.chroma.2016.03.081

Abstract

Herein we present a simple, rapid and low cost strategy for the preparation of robust stir bar coatings based on the combination of montmorillonite with epoxy resin. The composite stir bar was implemented in a novel automated multisyringe stir bar sorptive extraction system (MS-SBSE), and applied to the extraction of four chlorophenols (4-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol and pentachlorophenol) as model compounds, followed by high performance liquid chromatography-diode array detection. The different experimental parameters of the MS-SBSE, such as sample volume, selection of the desorption solvent, desorption volume, desorption time, sample solution pH, salt effect and extraction time were studied. Under the optimum conditions, the detection limits were between 0.02 and 0.34μgL−1. Relative standard deviations (RSD) of the method for the analytes at 10μgL−1 concentration level ranged from 3.5% to 4.1% (as intra-day RSD) and from 3.9% to 4.3% (as inter-day RSD at 50μgL−1 concentration level). Batch-to-batch reproducibility for three different stir bars was 4.65.1%. The enrichment factors were between 30 and 49. In order to investigate the capability of the developed technique for real sample analysis, well water, wastewater and leachates from a solid waste treatment plant were satisfactorily analyzed.

Item Details

Item Type:Refereed Article
Keywords:sample preparation, chromatography, montmorillonite, epoxy resin, stir bar sorptive extraction, multisyringe flow injection analysis, high performance liquid chromatography, chlorophenolsa
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Maya, F (Mr Fernando Maya Alejandro)
ID Code:127836
Year Published:2016
Web of Science® Times Cited:11
Deposited By:Chemistry
Deposited On:2018-08-19
Last Modified:2018-09-07
Downloads:0

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