Welcome to the New Restek.com! Take a tour of the new site and feel free to send us your feedback.
Your web browser will no longer be supported by Restek.com as of 30 June 2021.
To avoid any interruption in access or functionality, install a current-generation web browser now. Learn more.

Volatile Organics by EPA Method 8021A/502.2 on Rtx-502.2

ColumnRtx-502.2, 75 m, 0.45 mm ID, 2.55 µm (cat.# 10986)
with Universal “Y” Press-Tight Connector (cat.# 20405)
Sample
Diluent:RO water
Conc.:10 ppb in 5 mL
Injectionpurge and trap splitless
Purge and Trap
Instrument:Tekmar LSC3100 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.:50 °C (hold 2 min) to 70 °C at 2 °C/min to 130 °C at 9 °C/min to 200 °C at 40 °C/min (hold 5 min)
Carrier GasHe
DetectorµGold Tandem PID/Hall
Reaction Gas Flow:7 mL/min
Ionization Potential:0.35 mV
Base Temp.:200 °C
InstrumentFinnigan 9001
NotesCarrier Gas: constant pressure @ ~ 10 mL/min.
Adjust dichlorodifluoromethane to a retention time of 2.28 min. @ 50°C on the Rtx-VGC column.

PID: makeup 7mL/min.
Hall2000: RxnGas 25mL/min., RxnTemp 940°C, Propanol Flow 470 μL/min.

Primary Column: Rtx-VGC, 75m, 0.45mm ID, 2.55μm (cat.# 19409)
AcknowledgementFinnigan 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