I started measurements of air samples, which I had collected in electropolished canisters at Alert. I use a home-built preconcentration system based on freezing out analytes with liquid nitrogen traps. Compounds are collected by freezing and flashheating the traps until they are collected on the column of a GC-FID (again using a cryofocuser) and separated.
A colleague gave me a crash course on how to use the system, which is a bit fragile (with regard to leaks), but has been working well so far. After familiarizing myself with the system, I ran standards in the last couple of days and I am now ready to tackle the canisters.