Hydro Aluminium AS. Measurements of CF4 and C2F6 emissions from Norsk Hydro's aluminium smelter at Husnes, Norway.

NILU and Hydro Aluminium performed a test campaign for measurements of CF4 and C2F6 for stack emissions at Husnes
Aluminium Smelter. Time-integrated samples were taken with evacuated canisters combined with low-flow restrictors for
continuous sampling periods as long as 6 weeks. The samples were analyzed at NILU with a Medusa preconcentration
method combined with GC-MS SIM. As a main conclusion, time integrated sampling together with Medusa GC-MS
methodology is a very precise alternative to the traditional attempts to quantify PFC-emission.