Pure Chromatography
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Volatile Organics US EPA CLP 04.1 on Rtx-VMS

GC_EV00812
Column | Rtx -VMS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 19915) |
Sample | CLP 04.1 VOA CAL2000 MegaMix, 2000μg/mL in methanol (cat.# 30456) |
502.2 Calibration Mix #1 (gases), 2000μg/mL in methanol (cat.# 30042) | |
VOA Calibration Mix #1 (ketones), 5000μg/mL in methanol/water (90:10) (cat.# 30006) | |
VOA Internal Standard Mix, 2500μg/mL in methanol (cat.# 30011) | |
VOA Surrogate Spike Mix, 2500ug/mL in methanol (cat.# 30004) | |
Diluent: | 25mL water |
Conc.: | 20 ppb each analyte, ketones 100 ppb each |
Injection | purge and trap split (split ratio 35:1) |
Liner: | 1mm Split (cat.# 20972-214.1) |
Inj. Temp.: | 200 °C |
Purge and Trap | |
Instrument: | OI 4660 Eclipse Purge and Trap |
Trap Type: | #10 (Tenax/silica gel/carbon molecular sieve) |
Purge: | 11 min, flow 40 mL/min |
Desorb Preheat Temp.: | 185 °C |
Desorb: | 0.5 min @ 190 °C, flow 35 mL/min |
Bake: | 8 min @ 210 °C |
Interface Connection: | injection port |
Transfer Line Temp.: | 150 °C |
Oven | |
Oven Temp.: | 40 °C (hold 4 min) to 90 °C at 16 °C/min to 220 °C at 32 °C/min (hold 5 min) |
Carrier Gas | He, constant flow |
Linear Velocity: | 34 cm/sec @ 40 °C |
Detector | MS |
Mode: | Scan |
Transfer Line Temp.: | 150 °C |
Ionization Mode: | EI |
Scan Range: | 35-300 amu |
Printing tips! To print chromatograms full page, change the print settings in the print dialogue window of your PDF reader software: 1) "fit" or "fit to page", 2) "landscape" for wide chromatograms or "portrait" for tall chromatograms.