Vurdering af metoder til analyse af olie i jord

Bilag 11

Scanmetode

Method Information For: C:\MSDCHEM\1\METHODS\MSTSCAN.M

Method Comments:
Metode til GC-MS TIC scan af total kulbrinter

=============================================
HP6890 GC METHOD =============================================

OVEN Initial temp: 36 'C (On) Maximum temp: 325 'C
Initial time: 3.00 min Equilibration time: 0.00 min
Ramps:
# Rate      Final temp      Final time
1 15.00         315               18.00
2 0.0(Off)
Post temp: 0 'C
Post time: 0.00 min
Run time: 39.60 min

FRONT INLET (UNKNOWN)
Mode: Splitless
Initial temp: 350 'C (On)
Pressure: 7.86 psi (On)
Purge flow: 40.0 mL/min
Purge time: 0.40 min
Total flow: 43.6 mL/min
Gas saver: On
Saver flow: 20.0 mL/min
Saver time: 3.00 min
Gas type: Helium

COLUMN
Capillary Column
Model Number: HP 19091J-433
HP-5 5% Phenyl Methyl Siloxane
Max temperature: 325 'C
Nominal length: 30.0 m
Nominal diameter: 250.00 um
Nominal film thickness: 0.25 um
Mode: constant flow
Initial flow: 1.1 mL/min
Nominal init pressure: 7.87 psi
Average velocity: 38 cm/sec
Inlet: Front Inlet
Outlet: MSD
Outlet pressure: vacuumMS Information

-- -----------

Solvent Delay :
 
3.00 min
 
EM Absolute : False
EM Offset : 400
Resulting EM Voltage :
 
2164.7
 
[Scan Parameters]
 
Low Mass : 35.0
High Mass : 500.0
Threshold : 0
Sample # : 3 A/D Samples 8
Plot 2 low mass : 271.5
Plot 2 high mass :
 
272.5
 
[MSZones]
 
MS Quad : 150 C maximum 200 C
MS Source : 230 C maximum 250 C

 



Version 1.0 Marts 2004, © Miljøstyrelsen.