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

ZUSAMMENFASSUNG

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.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

57348-U

Supelco

SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 24 ga, StableFlex

57298-U

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SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler

57328-U

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SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 24 ga, for use with manual holder

57299-U

Supelco

SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with manual holder or autosampler, fiber L 2 cm

20358

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

57329-U

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SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 24 ga, StableFlex, for use with autosampler

20355

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ORBO^™ 78 HBr auf Carboxen^® 564 speziell gereinigt (20/45), 400/200 mg, W,W,W separators, O.D. × L 6 mm × 110 mm, pkg of 25 ea

57318

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga

10478-U

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

25467

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Carboxen^®-1010 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.53 mm, average thickness 30 μm

25461

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Carboxen^®-1006 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.53 mm, average thickness 30 μm

57335-U

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler

57295-U

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler

57319

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler

57334-U

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber

24246

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Carboxen^®-1010 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.32 mm, average thickness 15 μm

10184

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Carbosieve-Adsorbens, matrix Carbosieve S-III, 60-80 mesh, bottle of 10 g

57343-U

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 23 ga, for use with autosampler

24241-U

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Carboxen^®-1006 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.32 mm, average thickness 15 μm

57344-U

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SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 23 ga, for use with manual holder

11072-U

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Carboxen^® Adsorptionsmittel, matrix Carboxen^® 572, 20-45 mesh, bottle of 10 g

57914-U

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SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 2 cm

54041-U

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Carboxen^® 1000 Reversibles SPE-Röhrchen, 200 mg/mL, pk 30

10477-U

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Carboxen^® Adsorptionsmittel, matrix Carboxen^® 1000, 40-60 mesh, bottle of 50 g

28718-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

10269

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Carboxen^® Adsorptionsmittel, matrix Carboxen^® 569, 20-45 mesh, bottle of 10 g

10471

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Carboxen^® Adsorptionsmittel, matrix Carboxen^® 1003, 40-60 mesh, bottle of 10 g

23446-U

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ORBO^™-93 Sorbensröhrchen, 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-Adsorbens, matrix Carbosieve S-II, 60-80 mesh, bottle of 10 g

57912-U

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SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 1 cm