## Abstract A new approach to the introduction of large aqueous samples into a gas chromatograph, solid phase extraction β thermal desorption, is presented. Carrier gas pushes the sample through a packed liner mounted in a programmed temperature vaporizer; analytes retained by the packing material
Drying step for introduction of water-free desorption solvent into a gas chromatograph after on-line liquid chromatographic trace enrichment of aqueous samples
β Scribed by Jolan J. Vreuls; Rudy T. Ghijsen; Gerhardus J. de Jong; Udo A.Th. Brinkman
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 751 KB
- Volume
- 625
- Category
- Article
- ISSN
- 1873-3778
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Trace enrichment for the GC analysis of a series of chlorinated pesticides and polychlorinated biphenyls (PCBs) in aqueous samples has been achieved through a simple on-line technique involving sorption on an LC micro-precolumn followed by direct elution into a gas chromatograph with hexane. A 5-m r
## Abstract A module for combined solidβphase extraction and thermal desorption (SPETD) was incorporated into a system for automated GC analysis. Solidβphase extraction of analytes from water could be carried out after injection of an aqueous sample of 100 ΞΌL either by a loop using the carrier gas