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Volatile Petroleum Hydrocarbons (VPH) Massachusetts Department of Environmental Protection on Rtx-502.2

Peaks
1.Methanol
2.n-Pentane (40ng)
3.2-Methylpentane (60ng)
4.Methyl tert-butyl ether (60ng)
5.2,2,4-Trimethylpentane (60ng)
6.Benzene (20ng)
7.Toluene
Peaks
8.n-Nonane
9.Ethylbenzene (20ng)
10.p- and m-Xylene (40ng ea.)
11.o-Xylene (40ng)
12.1,2,4-Trimethylbenzene (40ng)
13.Naphthalene (40ng)
14.2,5-Dibromotoluene (SS)
image
GC_EV00063
ColumnRtx-502.2, 105 m, 0.53 mm ID, 3.0 µm (cat.# 10910)
Sample
Conc.: on-column at levels listed
Injectionpurge and trap split
Purge and Trap
Instrument:Tekmar Model LSC 2000
Trap Type:BTEX
Purge: 11 min, flow 40 ml/min
Dry Purge: 2 min
Desorb Preheat Temp:245 °C
Desorb: 2 min @ 250 °C
Bake: 6 min @ 260 °C
Oven
Oven Temp.:45 °C to 90 °C at 3 °C/min to 140 °C at 5 °C/min to 230 °C at 45 °C/min (hold 8 min)
Carrier GasHe, constant flow
Flow Rate:15 mL/min
DetectorPID and FID
NotesFor VPH analysis on an Rtx-502.2 column, use PID for aromatic
compounds and FID for aliphatic compounds
AcknowledgementChromatograms courtesy of Severn Trent Laboratories, Burlington, VT.
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