GC DETECTORS
Reduction Gas Detector - RGD
Expected Performance
50ppb
25ppb
Sample:100mLs roomair in
1000mL tedlarbag=50ppb
Sample: 50mLs roomair in
1000mL tedlarbag=25ppb
Thefollowingtwochromatograms
wereproducedwithanSRIRGD
equippedGC. Roomairsamples
weredilutedwithnitrogenintedlar
bags,theninjectedbygassampling
valve onto theMolecular Sieve
packedcolumn.
CommonAnalyticalParameters:
Valve injection;1mLsample loop
Column:2-meterMolecularSieve13X
Carrier:heliumat5mLs/minute
RGDgain:HIGH
Reactor temperature:290
o
C
Detector temperature:170
o
C
Valve temperature:60
o
C
Thischromatogramshowsthenoise
leveloftheRGDdetector,whichis
approximately500µVfrompeakto
peak.
500µV
Results:
Component Ret.Time Area
HYDROGEN 2.433 100.8250
OXYGEN 3.500 796.4090
Results:
Component Ret.Time Area
HYDROGEN 2.450 55.2755
OXYGEN 3.516 571.6580
