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An ultrasound-assisted pressure-regulated solid-phase microextraction setup for fast and sensitive analysis of volatile pollutants in contaminated soil

journal contribution
posted on 2023-05-20, 15:22 authored by Beiranvand, M, Alireza GhiasvandAlireza Ghiasvand
Release of analytes from their native matrix and diffusion into the gas phase is the rate-limiting step for the sampling of volatiles in complex solid samples. This limitation is more serious in the solvent-less and solvent-free microextraction sampling strategies. In this research, a three-stage reinforced sampling strategy including high-pressure/sonication/low-pressure was introduced for fast and efficient release of analytes in soil samples. For this purpose, a novel ultrasound-assisted pressure-regulated solid-phase microextraction (UA-PR-SPME) device was developed. It was coupled with gas chromatography-flame ionization detection (GC-FID) and carried out for the determination of benzene, toluene, ethylbenzene, and xylenes (BTEX, as the model analytes) in complex solid samples. Graphene oxide/3-aminopropyltriethoxysilane (GO-APTES) nanocomposite was synthesized and used as the SPME fiber coating. Under optimal conditions, the limits of detection (LODs) were obtained 0.1–0.4 ng/g. The calibration curves were linear over the range of 2.4–5000 ng/g. Relative standard deviations (RSDs%) were calculated 5.1–7.0% (n = 6). The developed technique was employed for the analysis of BTEX in contaminated soil samples.

History

Publication title

Environmental Science and Pollution Research

Pagination

1-10

ISSN

0944-1344

Department/School

School of Natural Sciences

Publisher

Ecomed Publishers

Place of publication

Rudolf-Diesel-Str 3, Landsberg, Germany, D-86899

Rights statement

Copyright Springer-Verlag GmbH Germany, part of Springer Nature 2020

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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