Agilent 7890B Greenhouse gas GC (GC-TCD, FID, uECD)

Gas valve directed Agilent 7890B GC has two gas lines for the gas samples:

TCD + FID – Results for CH₄ and CO₂

ECD – Result for nitrous oxide N₂O

CO₂ can be analyzed at wide concentration levels. High levels of CO₂ can be analyzed by TCD and low concentrations can be analyzed by using a methanizer and FID.

Injection manually by syringe or GC Pal autosampler is used to feed the gas samples from pressurized Exetainer tubes.