Adsorption of water vapour from humid air in carbon molecular sieves: carbosieve S-III and carboxens 569, 1000 and 1001.

Adsorption of water vapour from humid air in carbon molecular sieves: carbosieve S-III and carboxens 569, 1000 and 1001.

The Analyst (2003-03-11)

Patrycja Fastyn, Wojciech Kornacki, Malgorzata Kardaś, Janusz Gawlowski, Jan Niedzielski

ABSTRACT

The adsorption of water vapour in carbon molecular sieves (CMS) used to determine volatile organic compounds (VOCs) in air was investigated. The CMS mass in the trap was found not to affect the mass of retained water under conditions of incomplete saturation of the adsorbent bed with water. Thus, the restrictions commonly imposed on the CMS mass are not necessary. The usefulness of four different CMSs to sample large volumes of humid air was estimated. Carboxen 1000 exhibited the best performance. To assess the magnitude of CMS mass in the trap in dependence on the volume, the relative humidity and the temperature of the sample, the use of a novel parameter, called the water vapour interference factor, was suggested.

MATERIALI

N° Catalogo

Marchio

Descrizione del prodotto

57348-U

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Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 24 ga, StableFlex

57328-U

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Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 24 ga, for use with manual holder

57298-U

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Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler

57299-U

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Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (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^™ 90 Carboxen^® 564 (20/45), 160/80 mg, 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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Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 24 ga, StableFlex, for use with autosampler

57318

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga

10478-U

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

25467

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

20355

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

25461

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

57295-U

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler

57319

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler

57335-U

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler

24246

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

57334-U

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 85 μm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber

10184

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

57343-U

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 23 ga, for use with autosampler

57344-U

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Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), d_f 75 μm(CAR/PDMS, needle size 23 ga, for use with manual holder

24241-U

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

11072-U

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

54041-U

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Carboxen^® 1000 Reversible SPE Tube, 200 mg/mL, pk 30

57914-U

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Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 2 cm

10477-U

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

10198

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Carbosieve Adsorbent, matrix Carbosieve G, 60-80 mesh, bottle of 5 g

10471

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

10269

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

10189

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Carbosieve Adsorbent, matrix Carbosieve S-II, 60-80 mesh, bottle of 10 g

23446-U

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