Thick film traps with an irregular film: Preparation and evaluation
2004 (English)In: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1035, no 2, 159-165 p.Article in journal (Refereed) Published
A new method for preparation of sorbent-based ultra-thick film traps for concentration of trace volatile components from gaseous matrices is described. The procedure is based on blowing a prepolymer (polydimethylsiloxane) through a capillary tube, forming an irregular film of stationary phase. Subsequently, the prepolymer is immobilized in a few seconds by heating to 200 °C. Evaluation of the performance of the new traps showed that the loss of efficiency, compared to regular smooth film traps is only on the order of 20–30%. In terms of breakthrough volume, this loss in performance is rather insignificant. The technology is extremely simple and allows a rapid and cheap production of a large number of ultra-thick film traps, even in non-specialized laboratories. The method can be applied to any type of cross-linkable stationary phase, thereby expanding the scope of sorbent-based trapping and preconcentration concept. Many applications are anticipated in trace and ultra-trace analysis in a wide range of fields, such as environmental chemistry, polymers, food and process analysis.
Place, publisher, year, edition, pages
2004. Vol. 1035, no 2, 159-165 p.
Instrumentation, Open tubular traps, Sample handling, Sorbent trapping, Volatile organic compounds
IdentifiersURN: urn:nbn:se:kth:diva-9793DOI: 10.1016/j.chroma.2004.02.062ISI: 000220783100001ScopusID: 2-s2.0-1842533047OAI: oai:DiVA.org:kth-9793DiVA: diva2:132659
QC 201010042008-12-232008-12-232011-10-25Bibliographically approved