Wow, I think that must be some kind of board record–four identical GQ threads in a row with their OPs eaten by the groaning server. 
Care to restate your OP, Mix? All what nitrogen?
Stand back, folks. Give 'im/'er some air.
The dog did it. Honest.
Oh. Thought you said methane. Never mind.
I was hoping the (vanished) OP meant all the atmospheric Nitrogen.
Oh, well … another day, another question to find th’ answer to.