Pure Chromatography
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Volatile Organics by EPA 8021 on Rtx-VRX

GC_EV00001
Column | Rtx-VRX, 75 m, 0.45 mm ID, 2.55 µm (cat.# 19309) |
Sample | 502.2 CAL2000 MegaMix Mixture (cat.# 30431) |
502.2 Calibration Mix #1A (cat.# 30439) | |
4-bromochlorobenzene (cat.# 30230) | |
2-chloroethyl vinyl ether (cat.# 30265) | |
1,4-dichlorobutane (cat.# 30227) | |
fluorobenzene (cat.# 30030) | |
methyl tert-butyl ether (MTBE) (cat.# 30402) | |
Freon 113 (custom) | |
Conc.: | 20 ppb in 5 mL of RO water |
Injection | purge and trap splitless |
Purge and Trap | |
Instrument: | Tekmar LSC-3000 Purge and Trap |
Trap Type: | Vocarb 3000 |
Purge: | 11 min, flow 40 mL/min |
Dry Purge: | 1 min, flow 40 mL/min |
Desorb Preheat Temp.: | 245 °C |
Desorb: | 2 min @ 250 °C |
Bake: | 8 min @ 260 °C |
Interface Connection: | direct |
Transfer Line Tubing: | 0.32mm ID Siltek Guard Column (cat.# 10027) |
Oven | |
Oven Temp.: | 35 °C (hold 12 min) to 60 °C at 5 °C/min (hold 1 min) to 220 °C at 17 °C/min (hold 3 min) |
Carrier Gas | He, constant flow |
Flow Rate: | 9 mL/min |
Detector | μGold Tandem PID/HALL 2000 |
Notes | Dry purge: 1 min. @ 40mL/min. (MCS bypassed with Silcosteel tubing). PID: makeup 7mL/min., purge 7mL/min., set @ 0.35mV base temp. 200°C. ELCD Hall 2000: RxnGas 25mL/min.,RxnTemp.: 940°C, propanol flow 470μL/min. |
Acknowledgement | Finnigan 9001 GC, μGold Tandem Photoionization/HALL 2000 Electrolytic Conductivity Detector provided courtesy of Thermo Finnigan GC & GC/MS Division, 2215 Grand Avenue Pkwy, Austin, Texas 78728 |
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