I have a couple electrochemical cells I will need to sparge (deaerate) with nitrogen prior to and possibly during my experiment (the solution is .1 M NaOH). Does this need to be done in a fume hood?
From what I've read, it seems that $\ce{N2}$ gas isn't a huge danger, but if you're in a confined space it can cause a severe lack of oxygen. If that is the case, would a normal-sized classroom count as a confined space? Also, from what I understand about deaeration, the nitrogen bubbles escape the solution with impurities, but also with oxygen, so maybe in my case the lack of oxygen wouldn't be a problem.
This may be a simple question, but it has been difficult for me to find standard procedures for sparging a liquid with an inert gas, and I want to make sure I'm taken all the necessary precautions and steps.