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Column | Rtx-VMS, 30 m, 0.25 mm ID, 1.4 µm (cat.# 19915) |
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Standard/Sample | 8260B MegaMix calibration mix kit (cat.# 30475) |
California oxygenates mix (cat.# 30465) | |
VOA calibration mix #1 (ketones) (cat.# 30006) | |
8260A surrogate mix (cat.# 30240) | |
8260 internal standard mix (cat.# 30074) | |
Injection | purge and trap split (split ratio 25:1) |
Inj. Temp.: | 250 °C |
Purge and Trap | |
Instrument: | O.I. Analytical 4560 with 4551A Autosampler |
Trap Type: | #10 (Tenax/silica gel/carbon molecular sieve) |
Purge: | 11 min @ 20 °C, flow 38 mL/min |
Desorb Preheat Temp.: | 150 °C |
Desorb: | 1.0 min @ 190 °C, flow 32 mL/min |
Bake: | 10 min @ 210 °C |
Transfer Line Temp.: | 110 °C |
Oven | |
Oven Temp.: | 35 °C (hold 7 min) to 90 °C at 4 °C/min to 220 °C at 45 °C/min (hold 1 min) |
Carrier Gas | He, constant flow |
Flow Rate: | 1.3 mL/min |
Dead Time: | 1.47 min @ 35 °C |
Detector | Agilent 5971A GC-MS |
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Transfer Line Temp.: | 280 °C |
Tune Type: | PFTBA/BFB |
Scan Range: | 35-260 amu |
Notes | Sample Size: 10 mL Sample Temp: 40 °C Water Management: 110 °C purge, 0 °C desorb, 240 °C bake 6-Port Valve: 110 °C Sparge Mount: 45 °C Valve Manifold: 50 °C Other Conditions: prepurge, preheat, dry purge OFF |
Acknowledgement | Purge & trap courtesy of O.I. Analytical |
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