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

Supelco

Fibres SPME Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 24 ga, StableFlex

57328-U

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Fibres SPME Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 24 ga, for use with manual holder

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Fibres SPME Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler

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20358

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Tube ORBO^™ Carboxen-564, W,F,F separators, O.D. × L 6 mm × 75 mm, pkg of 25 ea, for analyte group MEK (methylethyl ketone)

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Fibres SPME Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 24 ga, StableFlex, for use with autosampler

57318

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Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), d_f 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga

10478-U

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Adsorbant Carboxen^®, matrix Carboxen^® 1000, 60-80 mesh, bottle of 10 g

25467

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Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler

57319

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Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler

57335-U

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Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler

24246

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PLOT - Carboxen-1010, L × I.D. 30 m × 0.32 mm, average thickness 15 μm

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24241-U

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PLOT - Carboxen-1006, L × I.D. 30 m × 0.32 mm, average thickness 15 μm

11072-U

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Tenax^® TA / Carboxen^® 1018, glass TD tube, preconditioned, O.D. × L 1/4 in. × 3 1/2 in., Sealed with (Swagelok^® End-Fittings), pkg of 10 ea

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23446-U

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Tube de sorbant ORBO^™-93, ORBO tube I.D. × L 6 mm × 95 mm, Bed A 180 mg, Bed B 90 mg, 60/80 mesh, pkg of 25 ea

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