Title: Accelerated solid-phase dynamic extraction of toluene from air
Authors: Van Durme, Jim ×
Demeestere, Kristof
Dewulf, Jo
Ronsse, Frederik
Braeckman, Leentje
Pieters, Jan
Van Langenhove, Herman #
Issue Date: Dec-2007
Publisher: Elsevier
Series Title: Journal of Chromatography A vol:1175 issue:2 pages:145-153
Abstract: Solid-phase dynamic extraction (SPDE) belongs to the most innovative sample preparation and enrichment techniques. However, there is still a lack of knowledge on the fundamentals of SPDE and its applicability in the field of environmental monitoring. A homemade sampling device is constructed to make a detailed study of SPDE kinetics for toluene extraction. It proved that at least 50 aspirating and dispensing cycles were necessary to obtain toluene equilibration between gas and coating phase. A mechanistic model is proposed to explain that in every dispensing step during SPDE, significant losses of retained analytes (up to 48%) occur due to desorption processes. A new accelerated solid-phase dynamic extraction procedure (ASPDE) has been developed that avoids dispensing stages during extraction. The resulting extraction time proves to be 1.7 min, being a reduction by a factor of 37 compared with the SPDE extraction time. ASPDE proved to have high potential in ambient/indoor air monitoring. The limit of detection for toluene was determined to be 56 ppb(v), i.e. a factor of respectively, 6 and 35 lower than obtained with SPME and conventional headspace sampling with gas syringe. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0021-9673
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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