10.6084/m9.figshare.963286.v2
Ki-Hyun Kim
Ki-Hyun
Kim
Sudhir Kumar Pandey
Sudhir Kumar
Pandey
J.H. Ahn
J.H.
Ahn
J.E. Szulejko
J.E.
Szulejko
Jong Ryeul Sohn
Jong
Ryeul Sohn
Effects of sorbent materials on the cryofocusing analysis of gaseous reduced sulphur compounds
Taylor & Francis Group
2014
sorbent
materials
cryofocusing
gaseous
reduced
sulphur
compounds
2014-04-22 07:35:14
Journal contribution
https://tandf.figshare.com/articles/journal_contribution/Effects_of_sorbent_materials_on_the_cryofocusing_analysis_of_gaseous_reduced_sulphur_compounds/963286
<div><p>The relative performance of different sorbent materials employed in the cryofocusing (e.g. in cold trap (CT) unit) stage was investigated at sub-ambient temperature by the thermal desorption (TD)–gas chromatography (GC)–pulsed flame photometric detector. To this end, the TD-based calibration of five reduced sulphur compounds (RSC: H <sub>2</sub>S, CH <sub>3</sub>SH, CS <sub>2</sub>, DMS and DMDS) and SO <sub>2</sub> was carried out via the Peltier cooling system with five types of sorbent combinations such as two single-bed (Tenax TA and Silica gel) plus three multibed types (a combination of either two from the following three sorbents: Tenax TA, Silica gel and Carbopack B). Relative performance of each of all five CT options, if evaluated in terms of response factors for each compound, demonstrated that each CT composition acts as an important criterion to distinguish detection properties between light and heavy sulphur species. Although the relative response of H <sub>2</sub>S and CH <sub>3</sub>SH was systematically distinguishable between the CT types, that of SO <sub>2</sub> was the most complicated to interpret. According to this study, the two CT types consisting of Carbopack B and Silica gel (CS-0.4 and CS-0.6) were the optimum choices for sulphur gas analysis in terms of basic QA parameters (sensitivity, reproducibility and linearity).</p></div>