Development of second-generation sample enrichment probe for improved sorptive analysis of volatile organic compounds

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dc.contributor.authorBurger, B. V.
dc.contributor.authorLe Roux, M.
dc.contributor.authorMarx, B.
dc.contributor.authorHerbert, S. A.
dc.contributor.authorAmakali, K. T.
dc.date.accessioned2011-05-15T15:59:33Z
dc.date.available2011-05-15T15:59:33Z
dc.date.issued2011-03
dc.descriptionThe original publication is available at http://www.sciencedirect.com/science/article/pii/S0021967311000859
dc.description.abstractThe sample enrichment probe (SEP) has recently been introduced as a user-friendly and cost-effective method for the sorptive extraction of volatile organic analytes from gaseous and aqueous samples for GC and GC-MS analyses. In a further development of the SEP technique, thinner polydimethylsiloxane (PDMS) tubing on polyimide-coated fused silica, instead of stainless steel rods or stalks, were used to produce the second-generation SEPs. The new SEP does not require widening of the needle-guiding orifice of the septum cap and analytes are desorbed at a faster rate from the thinner sleeve, which reduces the risk of carry-over. The flowless period that was previously recommended for analyses of highly volatile analytes is made redundant by the faster desorption from the thinner sorptive medium. It was found that differences in the thermal histories of SEPs are not the cause of the high relative standard deviations (RSDs) reported in our first paper on the technique. Excellent reproducibility can be attained by careful handling and storing of loaded SEPs and by rigorously following a standardised analytical protocol. © 2011 Elsevier B.V.en_ZA
dc.description.versionPost-print
dc.format.extent13 p.
dc.identifier.citationBurger, B. V. et al. 2011. Development of second-generation sample enrichment probe for improved sorptive analysis of volatile organic compounds. Journal of Chromatography A, 1218(12):1567-1575, doi:10.1016/j.chroma.2011.01.038.en_ZA
dc.identifier.issn1873-3778 (online)
dc.identifier.issn0021-9673 (print)
dc.identifier.otherdoi:10.1016/j.chroma.2011.01.038
dc.identifier.urihttp://hdl.handle.net/10019.1/11245
dc.language.isoen_ZAen_ZA
dc.publisherElsevier
dc.rights.holderAuthors retain copyright
dc.subjectHeadspace analysisen_ZA
dc.subjectOrganic analytesen_ZA
dc.subjectSample enrichment probe (SEP)en_ZA
dc.subjectSorptive extractionen_ZA
dc.subjectGas chromatographyen_ZA
dc.titleDevelopment of second-generation sample enrichment probe for improved sorptive analysis of volatile organic compoundsen_ZA
dc.typeArticleen_ZA
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