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US EPA Method 8260: GC Analysis of Volatiles on SPB®-624 after Purge & Trap using "K" Trap, Fast GC Analysis

US EPA Method 8260: GC Analysis of Volatiles on SPB®-624 after Purge & Trap using "K" Trap, Fast GC Analysis suitable for GC

Materials

analytical column

Product No.
Description
Pricing

24205-U

VOCOL® Capillary GC Column

L × I.D. 30 m × 0.25 mm, df 1.50 μm

24256

SPB®-624 Capillary GC Column

L × I.D. 60 m × 0.25 mm, df 1.40 μm

24255

SPB®-624 Capillary GC Column

L × I.D. 30 m × 0.25 mm, df 1.40 μm

28463-U

VOCOL® Capillary GC Column

L × I.D. 20 m × 0.18 mm, df 1.00 μm

28662-U

SPB®-624 Capillary GC Column

L × I.D. 20 m × 0.18 mm, df 1.00 μm

accessory

Product No.
Description
Pricing

20999

Hamilton® syringe, 1000 series GASTIGHT®, PTFE luer lock

1005TLL, PTFE Luer lock, volume 5 mL, needle size (not included)

22718-U

Soil Sampler

size 150 mm × 19 mm, Tekmar® 12-0507-024

22780

Fritless Purge Sampler Glassware

size 5 mL, Tekmar® 14-2336-024

22742-U

Fritted Purge Sampler

size 5 mL,

right stem

, Tekmar® 14-3544-124

26294

Hamilton® syringe, 1000 series GASTIGHT®, PTFE luer lock

1005SLPT (for Purge & Trap), volume 5 mL, needle size (not included)

related product

Product No.
Description
Pricing

23188

EPA Vials, white polypropylene screw top hole cap, pre-cleaned and assembled

volume 40 mL, clear glass vial, vial O.D. × H 29 mm × 82 mm, pkg of 72 ea

23189

EPA Vials, white polypropylene screw top hole cap, pre-cleaned and assembled

volume 40 mL, amber glass vial, O.D. × H 29 mm × 82 mm, pkg of 72 ea

sample prep

Product No.
Description
Pricing

21066-U

Purge/Trap K Vocarb® 3000

for use with Tekmar® Velocity XPT, LSC-1, LSC-2, LSC-2000, 4000 (Straight, 12 in./30.5 cm, Swagelok fitting), HT-3

21085-U

Purge/Trap K Vocarb® 3000

for use with Dynatech "Dyna"

21131-U

Purge/Trap K Vocarb® 3000

for use with OI Analytical 4460

21159

Vocarb® 3000 Purge Trap K, CDS

for use with CDS Peakmaster

24920-U

Purge/Trap K Vocarb® 3000

for use with Tekmar® 3000, 3100 (Straight, 12 in./30.5 cm, Valco fitting

24940-U

Purge/Trap K Vocarb® 3000

for use with OI Analytical Eclipse 4660, 4560

standard

Product No.
Description
Pricing

442747-U

Perfluorotributylamine (PFTBA)

analytical standard

47411-U

EPA 8240B/8260A Matrix Spike Mix

certified reference material, 2500 μg/mL each component in methanol

48083

4-Bromofluorobenzene solution

certified reference material, 2000 μg/mL in methanol

46838-U

EPA 8260 Internal Standards Mix 1

certified reference material, 2500 μg/mL in methanol

CRM48483

Methyl tert-butyl ether solution

certified reference material, TraceCERT®

CRM48949

TCL Volatiles Mix

certified reference material, 2000 μg/mL each component in methanol: water (9:1)

CONDITIONS

sample/matrix

each analyte at 50 ppb in 5 mL water

purge trap

VOCARB 3000 K (24940-U)

purge

40 mL/min at 25 °C for 11 min

dry purge

2 min

desorption preheat

205 °C

desorption temp.

210 ºC for 1 min

desorption flow

150 mL/min

bake

260 °C for 10 min

transfer line/valve temp.

110 °C

column

SPB-624, 20 m x 0.18 mm I.D., 1.0 μm (28662-U)

oven

40 °C (1 min), 11 °C/min to 125 °C, 35 °C/min to 230 °C (2 min)

inj. temp.

150 °C

MSD interface

220 °C

scan range

m/z = 35-400

carrier gas

helium, 1.5 mL/min

injection

100:1 split

liner

0.75 mm I.D. SPME

Description

Analysis Note

US EPA Method 8260 describes the analysis of volatile organic compounds in solid wastes and ground waters. This application illustrates the analysis of many compounds commonly analyzed by this method using purge and trap coupled to GC-MS. A short, narrow I.D. SPB-624 column was used to shorten the analysis time to under 11 minutes. A high desorb flow through the trap was necessary to prevent band broadening of the gaseous VOCs. This was accomplished by increasing the split ratio, thus increasing the total flow through the trap during desorb.

Legal Information

SPB is a registered trademark of Merck KGaA, Darmstadt, Germany

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