ASTM 3612/TOGA/DissolvedGasGC
Revised 2013
Shown at right is
the 1% gasmix
( equilibrated into
water ) using nitro-
gen carrier gas and
high ( 120ma ) fila-
ment current.
Nitrogen carrier en-
ables detection of
hydrogen in liquids
to 5ppm but sacri-
fices detection of nitrogen.
TheFID/Methanizer detectsMethane, CO,
CO2, ethane, ethylene, and acetylene and oth-
er hydrocarbons down to 1ppmv.
TCD signal
192ppmvHydrogen
in waterwater
