Surface characterization of commercial fibers for solid-phase microextraction and related problems in their application.

Surface characterization of commercial fibers for solid-phase microextraction and related problems in their application.

Fresenius' journal of analytical chemistry (2001-02-28)

C Haberhauer-Troyer, M Crnoja, E Rosenberg, M Grasserbauer

PMID11220312

RÉSUMÉ

The surfaces of commercially available polydimethylsiloxane (PDMS) and Carboxen-PDMS fibers for solid-phase microextraction (SPME) were investigated by optical and electron microscopy. Damage to the coating as well as contamination of new fibers and a highly variable number of pores in Carboxen-PDMS coatings were observed. Together with the contamination of the fibers during their use with metallic particles originating from the SPME fiber holder they are possible explanations for the problems encountered in the analysis of organolead, organotin and organosulfur compounds, such as artifact formation and low repeatability.

MATÉRIAUX

Référence du produit

Marque

Description du produit

57348-U

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Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), matrix active group 50/30µm DVB/CAR/PDMS, needle size 24 ga, StableFlex fiber, for use with autosampler, fiber L 2 cm, pk of 3

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