Issue 1, 2021

Carbon aerogel-based solid-phase microextraction coating for the analysis of organophosphorus pesticides

Abstract

The current study is focused on the in situ synthesis of a carbon aerogel (CA)-based solid-phase microextraction (SPME) fiber coating on stainless steel wire and evaluation of the suitability of CAs as SPME coating materials for the analysis of selected organophosphorus pesticides (OPPs) contained in environmental samples. A CA-based coating was obtained by pyrolyzing organic aerogels, which were prepared by the sol–gel polymerization of formaldehyde and 5-methylresorcinol, an oil shale processing by-product. The results demonstrated, for the first time, the in situ synthesis of a CA-based SPME fiber coating on stainless steel wire and its suitability for the extraction and preconcentration of six OPPs. Main parameters affecting the extraction efficiency were investigated and optimized. The direct immersion (DI)-SPME procedure combined with gas chromatography-mass spectrometry (GC-MS) for the simultaneous analysis of selected OPPs was successfully applied to the efficient and sensitive determination of analytes of interest in environmental matrices of honey and natural water samples. The developed CA-coated SPME fiber showed good linearity (R2 = 0.981–0.994), low detection limits (0.11–0.83 μg L−1) and satisfactory single fiber and fiber-to-fiber reproducibilities (8.8–12.3%, n = 5 and 11.4–17.2%, n = 3). The performance of the CA-coating was compared with that of commercially available SPME fiber coatings.

Graphical abstract: Carbon aerogel-based solid-phase microextraction coating for the analysis of organophosphorus pesticides

Supplementary files

Article information

Article type
Paper
Submitted
28 Oct 2020
Accepted
19 Nov 2020
First published
20 Nov 2020

Anal. Methods, 2021,13, 69-76

Carbon aerogel-based solid-phase microextraction coating for the analysis of organophosphorus pesticides

P. Jõul, M. Vaher and M. Kuhtinskaja, Anal. Methods, 2021, 13, 69 DOI: 10.1039/D0AY02002H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements