Factual error: While it is true that lithium carbonate can be used to treat depression and other psychiatric disorders, it cannot be administered in gaseous form. It is a very stable salt and only starts to form vapour at 1,310 degress Celcius. Spraying it about as a 'mood stabliser' at that temperature, as Kryten does, is going to kill everyone on the spot.
Suggested correction: Although it has limited solubility in water, lithium carbonate solution exists, and water forms vapour at a much lower temperature.
Please do some research. If you dissolve a salt - any salt - in water, then boil off the water, the salt remains behind in crystalline form. It's called distillation. This is how seawater is rendered into freshwater. It's not rocket science.
I have been doing research using you. You've been a valuable asset in my education, and I appreciate you sharing your knowledge. It's been fun.