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  • Comparison of nutshell granular activated carbons to commercial adsorbents for the purge-and-trap gas chromatographic analysis of volatile organic compounds.

Comparison of nutshell granular activated carbons to commercial adsorbents for the purge-and-trap gas chromatographic analysis of volatile organic compounds.

Journal of chromatography. A (2000-07-13)
L H Wartelle, W E Marshall, C A Toles, M M Johns
RESUMEN

Granular activated carbons (GACs) made from agricultural by-products were investigated as adsorbents for short path thermal desorption gas chromatographic analysis of selected polar and nonpolar organic compounds. GACs made from macadamia nut, black walnut and hazelnut shells were compared to four commercially available adsorbents, namely, Tenax TA, Carboxen 569, Carbosieve SIII and coconut charcoal for their properties in purge-and-trap analysis. Adsorption values and breakthrough volumes were calculated for compounds from C3 and C6-C10. GACs derived from macadamia nut shells were found to adsorb and desorb between 80% (benzene) and 277% (ethylbenzene) more acetone (C3), benzene (C6), toluene (C7), ethyl- (C8), n-propyl- (C9), or sec.-butylbenzenes (C10) purged from water at the 100 ppb level than the commercial adsorbents tested.

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Supelco
Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, needle size 24 ga, StableFlex
Supelco
Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, needle size 23 ga, StableFlex, for use with autosampler
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Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, needle size 24 ga, for use with manual holder
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Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, needle size 23 ga, StableFlex, for use with manual holder or autosampler, fiber L 2 cm
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Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, needle size 24 ga, StableFlex, for use with autosampler
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ORBO-78 400/200 MG PK/25, W,W,W separators, O.D. × L 6 mm × 110 mm, pkg of 25 ea
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga
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Carboxen® Adsorbent, matrix Carboxen® 1000, 60-80 mesh, bottle of 10 g
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Columna capilar para GC Carboxen®-1010 PLOT, L × I.D. 30 m × 0.53 mm, average thickness 30 μm
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Columna capilar para GC Carboxen®-1006 PLOT, L × I.D. 30 m × 0.53 mm, average thickness 30 μm
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 85 μm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber
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Columna capilar para GC Carboxen®-1010 PLOT, L × I.D. 30 m × 0.32 mm, average thickness 15 μm
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Carbosieve Adsorbent, matrix Carbosieve S-III, 60-80 mesh, bottle of 10 g
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 75 μm(CAR/PDMS, needle size 23 ga, for use with autosampler
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Columna capilar para GC Carboxen®-1006 PLOT, L × I.D. 30 m × 0.32 mm, average thickness 15 μm
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Fibra de carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, df 75 μm(CAR/PDMS, needle size 23 ga, for use with manual holder
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Carboxen® Adsorbent, matrix Carboxen® 572, 20-45 mesh, bottle of 10 g
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Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 2 cm
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Carboxen® 1000 Reversible SPE Tube, 200 mg/mL, pk 30
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Carboxen® Adsorbent, matrix Carboxen® 1000, 40-60 mesh, bottle of 50 g
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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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Carboxen® Adsorbent, matrix Carboxen® 569, 20-45 mesh, bottle of 10 g
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Carboxen® Adsorbent, matrix Carboxen® 1003, 40-60 mesh, bottle of 10 g
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Tubo absorbente 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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Carbosieve Adsorbent, matrix Carbosieve S-II, 60-80 mesh, bottle of 10 g
Supelco
Fibra de divinilbenceno/carboxeno/polidimetilsiloxano (DVB/CAR/PDMS) de SPME, for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 1 cm
Supelco
Carbosieve Adsorbent, matrix Carbosieve S-II, 80-100 mesh, bottle of 10 g