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  • Measurement of volatile organic compounds by the US Environmental Protection Agency Compendium Method TO-17. Evaluation of performance criteria.

Measurement of volatile organic compounds by the US Environmental Protection Agency Compendium Method TO-17. Evaluation of performance criteria.

Journal of chromatography. A (1998-08-11)
W A McClenny, M Colón
ZUSAMMENFASSUNG

An evaluation of performance criteria for US Environmental Protection Agency Compendium Method TO-17 for monitoring volatile organic compounds (VOCs) in air has been accomplished. The method is a solid adsorbent-based sampling and analytical procedure including performance criteria for four merit parameters. These are: (1) the method detection limit (MDL); (2) the method precision; (3) the agreement between two samples taken at different flow-rates over the same time period [a distributed volume pair (DVP)]; and (4) audit accuracy. A two-adsorbent tube packing of Carbotrap and Carboxen 1000 (Supelco) was tested. Synthetic mixtures containing 41 compounds at concentrations of 10 ppb (v/v) or 2 ppb (v/v) each in humidified zero air, and indoor air from a personal residence, were sampled for 1-h periods during which 1-l and 4-l samples were obtained simultaneously. For synthetic samples, the MDL was determined to be < or = 0.5 ppb (v/v) for 29 of the 41 compounds examined for samples at 47% relative humidity (RH), and for 27 of 41 compounds at 85% RH. The method precision at both 2 and 10 ppb (v/v) was < or = 20% for 90+ % of the samples using five sampling runs and the DVP samples were within 25% for 80% of the samples. For the indoor samples, 26 target compounds were tentatively identified and 12 unknowns were detected; all but 10% of these compounds met the DVP criteria.

MATERIALIEN
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Marke
Produktbeschreibung

Supelco
SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 24 ga, StableFlex
Supelco
SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler
Supelco
SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 24 ga, for use with manual holder
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
Supelco
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)
Supelco
SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), needle size 24 ga, StableFlex, for use with autosampler
Supelco
Carbotrap® 300, glass TD tube, fritted, O.D. × I.D. × L 6 mm × 4 mm × 7 in., preconditioned, pkg of 1 ea
Supelco
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
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga
Supelco
Carboxen® Adsorptionsmittel, matrix Carboxen® 1000, 60-80 mesh, bottle of 10 g
Supelco
Carboxen®-1010 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.53 mm, average thickness 30 μm
Supelco
Carboxen®-1006 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.53 mm, average thickness 30 μm
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber
Supelco
Carboxen®-1010 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.32 mm, average thickness 15 μm
Supelco
ORBO 101 Carbotrap® B (20/40), 100/50 mg, W,W,W separators, O.D. × L 6 mm × 70 mm, pkg of 25 ea
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 23 ga, for use with autosampler
Supelco
Carbotrap® 300, O.D. × L 1/4 in. × 3 1/2 in., stainless steel TD tube, Sealed with Brass Endcaps, preconditioned, pkg of 10 ea
Supelco
Carboxen®-1006 PLOT Kapillar-GC-Säule, L × I.D. 30 m × 0.32 mm, average thickness 15 μm
Supelco
SPME-Faseranordnung Carboxen/Polydimethylsiloxan (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 23 ga, for use with manual holder
Supelco
Carbotrap® 300, O.D. × L 1/4 in. × 3 1/2 in., stainless steel TD tube, preconditioned, pkg of 10 ea
Supelco
Carbotrap®-Adsorbens, matrix Carbotrap® B, 20-40 mesh, bottle of 10 g
Supelco
Carbotrap® 217, O.D. × L 1/4 in. × 3 1/2 in., stainless steel TD tube, Sealed with Brass Endcaps, preconditioned, pkg of 10 ea
Supelco
Carboxen® Adsorptionsmittel, matrix Carboxen® 572, 20-45 mesh, bottle of 10 g
Supelco
ORBO 100 auf Carbotrap® B (20/40), 350/175 mg, W,W,W separators, O.D. × L 7 mm × 110 mm, pkg of 25 ea
Supelco
SPME-Faseranordnung Divinylbenzol/Carboxen/Polydimethylsiloxan (DVB/CAR/PDMS), for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 2 cm
Supelco
Carboxen® 1000 Reversibles SPE-Röhrchen, 200 mg/mL, pk 30
Supelco
Carbotrap®-Adsorbens, matrix Carbotrap® C, 20-40 mesh, bottle of 10 g