Dear Mahendra,
Could you please send your direct e-mail to isogeochem, so we, who are
interested in your work and wish to have a copy of your paper could
contact
you directly?
Thank you very much
Rolf Siegwolf
On 16.10.2004, at 05:39, oleynik wrote:
> Dear Mahendra,
> Could you please send a copy of your paper for our lab.
> Thanks a lot,
> Sergey.
>
>
>
>> At 02:26 PM 10/8/2004, Mahendra P. Verma wrote:
>>> Hi:
>>>
>>> Recently, we did some work to understand the salt effect on the
>>> CO2-H2O
>>> isotopic exchange equilibrium. It will be published in the
>>> Proceedings of
>>> "Symposium on Quality Assurance for Analytical Methods in Isotope
>>> Hydrology"
>>> , IAEA, Vienna. The equilibrium also depends on other parameters,
>>> such as
>>> alkalinity, buffering capacity, pH, and amount of total dissolved
>>> CO2, etc.,
>>> which are still to be studied. If anyone is interested, I can send a
>>> copy.
>>>
>>>
>>>
>>> It looks with the discussion that one can reduce the analysis time
>>> with
>>> equilibrating CO2-H2O at higher temperature (say 40?C). If it is
>>> really the
>>> objective, the answer is NO. There will be other problems like
>>> water vapor.
>>> There will be substantial amount water vapor that will affect the
>>> oxygen
>>> isotopic analysis even one condenses the water vapor before
>>> injecting the
>>> CO2 into the mass spectrometer. CO2 is highly soluble in water. So,
>>> the
>>> condensed vapor will have some CO2 that will affect the isotopic
>>> composition
>>> of the equilibrated CO2. Although such experiments must always be
>>> encouraged, one gets sometimes valuable information with doing work
>>> against
>>> the normal procedures.
>>>
>>>
>>>
>>> I hope it should be of some contribution to the discussion.
>>>
>>>
>>>
>>> Cheers
>>>
>>>
>>>
>>> Mahendra
>
> Sergey OLEYNIK, PhD
> Ecology and Evolution
> Dept. Biological Sciences
> University of Illinois, Chicago
> 845 W. Taylor st.
> UIC, 3342 SES
> Chicago, IL 60607
> Phone: office 312-9964584
> lab 312-3550600 (voice)
> Fax: 312-4132435
> [log in to unmask]
>
__________________________________
Dr. Rolf Siegwolf
Lab for Atmospheric Chemistry
Stable Isotopes and Ecosystem Fluxes
Paul Scherrer Institut
CH-5232 Villigen PSI
Switzerland
e-mail: [log in to unmask]
Phone: +41 56 310 2786
Fax : +41 56 310 4525
http://lac.web.psi.ch/
http://sibaebasin.web.psi.ch/
__________________________________
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