Re: Half life of N2?

And N2 is stable nitrogen, about 80% of air.

-- 
Bob Burns
Mill Hall PA



"[EMAIL PROTECTED] (formerly)" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Dear Jacobe Hazzard:
>
> "Jacobe Hazzard" <[EMAIL PROTECTED]> wrote in
> message
> news:[EMAIL PROTECTED]
> > Hi,
> > I use an ozone generator to control the population of mold spores in a
> clean
> > environment. I constructed it myself, basically it's a pyrex tube
wrapped
> in
> > conducting foil with a conducting wire mesh rolled inside. A very high
> > alternating voltage is imposed across the foil and mesh, and air is
> forced
> > through the tube, dispersing large amounts of ozone into the room.
> >
> > I have been told that high voltage ozone generators run in plain air
> > environments also generate unstable N2 molecules, a known carcinogen.
Can
> > anyone comment as to the truth of this statement? If true, then what is
> the
> > half-life of N2?
>
> Your leg has been stretched.  In ozone generation in other than pure
oxygen
> (which isn't very efficient), NO2, N2O, and N2O5 have been noted to be
> produced.  How much is a function of the amount of moisture in your feed
> gas stream (plus a few other things).
>
> Some of these are stable.
>
> > Chemistry is not my strongest skill, I just want to make sure the
> > sanitization procedure is safe. No-one is present in the room while it
is
> > being ozonated, and I need to know the minimum time before the room
> becomes
> > safe to inhabit again (I believe the half-life of ozone is roughly 1/2
> hour,
> > I have been allowing a minimum of 2 hours for decay.).
>
> Run your generator on oxygen feed, and vent the room (so you don't build
up
> too much oxygen in the room).  Don't let the ozone generator sit in the
> room, as the ozone will age it.
>
> Be sure you check the atmospheric ozone level with instrumentation.  The
> halflife of ozone is a function of room contents, temperature, and
> humidity.
>
> David A. Smith
>
>