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Journal of Nanomaterials
Volume 2016, Article ID 1390345, 7 pages
http://dx.doi.org/10.1155/2016/1390345
Research Article

Polyetherimide Nanofibres as Sorbents for Organochlorinated Pesticides Determination

Technical University of Liberec, CxI, Studentská 2, 461 17 Liberec, Czech Republic

Received 24 March 2016; Revised 27 April 2016; Accepted 1 June 2016

Academic Editor: Marco Salerno

Copyright © 2016 Antoš Vojtěch et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electrospun polyetherimide (PEI) nanofibres were fixed on a steel wire solid phase microextraction (SPME) assembly. The basic properties of the prepared nanofibres were determined by thermogravimetry, differential scanning calorimetry, adsorption, and SEM. The analytical performance of prepared PEI SPME fibres was compared with three commercially available SPME fibres, 7 μm PDMS, 100 μm PDMS, and DVB/Carboxene/PDMS. As model water pollutants, persistent organochlorinated pesticides hexachlorocyclohexanes (HCH) and chlorobenzene (ClB) were chosen as model water pollutants. The fibres were compared in the headspace- (HS-) SPME mode of GC-MS/MS instrumentation. The comparison omitted other method parameters and focused exclusively on the extraction time variability. Lab-made PEI SPME fibres showed significantly better response for the target compounds than the other tested fibres from industrial production. Based on the results, the extraction time could be shortened from 50 to 10 min, if PEI SPME fibres were used as a modification of existing analytical protocol.