595
GCCHROMATOGRAMS |
ENVIRONMENTAL
Gasoline Range Organics (GRO)
VolatilePetroleumHydrocarbons (VPH)
MassachusettsDepartmentofEnvironmentalProtection
Rtx®-502.2
PID
min.
4
8
12
16
20
24
28
32
1. methanol
2. methyl
tert
-butyl ether (60ng)
3. benzene (20ng)
4. toluene
5. ethylbenzene (20ng)
6.
p
+
m
-xylene (40ng ea.)
7.
o
-xylene (40ng)
8. 1,2,4-trimethylbenzene (40ng)
9. naphthalene (40ng)
10. 2,5-dibromotoluene (SS)
2
1
3
4
5
6
7
8
9
10
Column:
Rtx
®
-502.2, 105m, 0.53mm ID, 3.0µm (cat.# 10910)
Conc.:
on-column at levels listed
Oven temp:
45°C to 90°C@ 3°C/min., to 140°@ 5°C/min.,
to 230°C@ 45°C/min. (hold 8min.)
Carrier gas:
helium@ 15mL/min.TekmarModel LSC 2000
Trap:
BTEX
Purge:
helium@ 40mL/min. for 11min.
Dry purge:
2min.
Desorb preheat:
245°C
Desorb:
2min.@ 250°C
Bake:
6min.@ 260°C
Chromatograms courtesy of SevernTrent Laboratories, Burlington, VT.
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 (60ng)
8.
n
-nonane (40ng)
9. ethylbenzene (20ng)
10.
p
+
m
-xylene (40ng ea.)
11.
o
-xylene (40ng)
12. 1,2,4-trimethylbenzene (40ng)
13. naphthalene (40ng)
14. 2,5-dibromotoluene (SS)
FID
GC_EV00063
ForVPHanalysisonanRtx®-502.2column, usePID foraromatic
compoundsandFID foraliphaticcompounds.
2
1
3
4
5
6
7
8 9
10
11
12
13
14
min.
4
8
12
16
20
24
28
32
free
literature
OptimizingMassachusettsVolatilePetroleum
HydrocarbonGCAnalysis
MassachusettsVPHaffordsmore reliablequantification
of volatilepetroleumhydrocarbons, relative toolder
“analyticalwindow”methods, andhasbeenadopted
byother statesand inCanada. This2-pagenoteoffers
valuable tips for selectinga trapandacapillaryGC
columncompatiblewith themethodology. Reference
mixes specificallydesigned forMAVPHaredescribed.
Downloadyour freecopy from
ApplicationsNote
lit. cat.#59150
Website :
E-mail :
TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
