There was no such experiment performed as Exo and I got hung up on how to deal with the CO2. We had some ideas, but both of us got onto other things and it never came to anything.
I'd say if you're trying to come up with, "how can we show lupus sufferers at hospitals that ecigs are OK", I'd say your effort is misguided since it's as much a battle of perception as one of fact. So long as something *thinks* it's a bad thing, I can promise you they'll come up with symptoms. Such is the mind.
DVap - Here is the experiment that I was referring to in my post.
Well, that was not quite a waste of time
After bubbling for 24 hours acidified, the exhaled vapour titration curve had the shape of a
nicotine + (bi)carbonate simulated curve.
For some reason the CO2 removal worked with the test solution of acidified
(nicotine + sodium bicarbonate), but didn't with the actual exhaled vapour
(with added CO2/water from breath).
Only thing I can think of is that bicarbonate or carbonate is 'bound' with the nicotine somehow
in exhaled vapour (in equals amounts?).
Assuming worst case i.e. 50/50 nic/HCO3 & approximating the nicotine as half the nicotine+CO3 titre,
this test gave ~33% of the nicotine from the juice in the exhaled vapour
(~15 mg recovered from ~48 mg nicotine i.e. 2ml of 24mg/ml),
bearing in mind I was drawing in to mouth & exhaling as soon as possible.
Only thing I can say is that : trying not to get nicotine uptake from juice by mouth intake only,
and quick exhale, gives as little as 1/3rd & as much as 2/3rds of the nicotine adsorbed.
Guess I need to design a purpose built 'double exhale-volume vapour collector',
and sort out a definitive 'account for CO2' method, maybe a later project,
unless there's a strong interest in getting further info now.
Otherwise returning to the next of the more-reliable tests,
which will be 6V vaping of 10ml of 36mg/ml PG on 901 atty,
to see if any significant amount of nic. is killed off.
Last edited by exogenesis; 12-30-2009 at 02:29 PM.
This is post #132 of exogenesis in the How much nicotine is destroyed during vaping ? thread.