Automated high-capacity sorption probe for extraction of organic compounds in aqueous samples followed by gas chromatographic analysis
2004 (English)In: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1033, no 2, 339-347 p.Article in journal (Refereed) Published
An automated high-capacity sorption device for GC analysis of ultra trace components has been developed. The scope of the presented technique was to combine the simplicity of solid-phase microextraction (SPME) with the high extraction efficiency of the stir bar sorptive extraction technology. Sorptive extractions of water samples were performed using polydimethylsiloxane (PDMS) rubber tubing (120 μl) mounted onto a glass rod. The sampling procedure was carried out by a robotic autoinjector. Since the setup is fully automated, unattended and precise time-controlled extraction of samples is possible and makes quantitation with non-equilibrium extractions feasible. The sorption probes are easy to exchange, which facilitates off-line/in-field sampling. The system was evaluated with a test mixture of 44 environmentally hazardous compounds. Detection limits were found to be in the sub-ppt region. The performance of the system was demonstrated with the analysis of polycyclic aromatic hydrocarbons in urban snow.
Place, publisher, year, edition, pages
2004. Vol. 1033, no 2, 339-347 p.
Automation, Environmental analysis, Extraction methods, Polynuclear aromatic hydrocarbons, Sorption, Water analysis
IdentifiersURN: urn:nbn:se:kth:diva-4910DOI: 10.1016/j.chroma.2004.01.056ISI: 000220398900018ScopusID: 2-s2.0-1542298904OAI: oai:DiVA.org:kth-4910DiVA: diva2:6846
QC 201008312008-12-232008-12-232012-03-21Bibliographically approved