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RE: tritium oxidation rates
I may face the same problem as I want to set a sampling device for a set of
4 fume hoods with 2 different uses: One for HTO manipulations and one for
HT tritiations. I was thinking about a bubbler system for HTO and an
oxidizing mechanism (heated precious metal catalyst like palladium ?) to
transform HT into HTO and then run throught the bubbler. Since HT and HTO
experience at not often performed simultaneously, I may not need two set of
bubblers. Of course, all of this is still on paper, I will tackle this issue
at the end of this year ...But this trend of discussion is again a precious
source of info !
Thanks to all !
Stephane
RSO,
Radiation Safety Specialist/Spécialiste en radioportection
Risk Management/Gestion des Risques
Merck Frosst Canada
tel: (514) 428.8695
FAX: (514). 428.4917
e-mail: stephane_jeanfrancois@merck.com
> ----------
> From: Scott Schwahn[SMTP:schwahn@jlab.org]
> Sent: Friday, June 05, 1998 11:01 AM
> To: Multiple recipients of list
> Subject: tritium oxidation rates
>
(cut)
> Now, if T2 and HTO are both released into an atmosphere and measured by
> bubbler
> or measuring air conditioner condensate, things get a little confused. In
> both
> cases, you are measuring HTO, but from which ORIGINAL species did the
> tritium co
> me? One might argue that it really makes no difference, as the biological
> absor
> ption, and therefore the limits, are similar, but it does make a
> difference when
> one is trying to account for all the tritium.
>
> Now, my question which would really help bound the problem: does anyone
> have a s
> ource of information which cites the rate at which T2 is oxidized in moist
> air t
> o form HTO as a function of relative humidity (or even at one specified
> humidity
> ), air pressure and temperature (or even at one set of conditions - STP or
> NTP)?
>
>
> Any help would be appreciated.
> --
>
> Scott O. Schwahn, CHP
> Thomas Jefferson National Accelerator Facility
> schwahn@jlab.org
>
>
>