On Thu, 23 Jun 2005, Mahendra P. Verma wrote:

...
> We wish to extend the application of this method for petroleum waters.
> Therefore, we need your help to get well characterized (major chemical
> analysis including HCO3 and CO3) petroleum waters. We need 50-100 ml of
> water sample. Thanks in advance for any support, suggestion and help.
...

Hi Mahendra:

When you have found the suitable method to analyze these and if you have
the time and the resources, I suggest you analyze for malonic acid as
well. We have proposed this to be the reaction intermediate in the
isotope exchange reaction between organic and inorganic carboxyl groups.
See

Felipe M.A., Kubicki, J.D and Freeman, K.H. (2005) "A mechanism for carbon
isotope exchange between aqueous acetic acid and CO2/HCO3-: An ab initio
study." Organic Geochemistry 36, 6 , 835-850.


Best,

- Mihali

----
.  Mihali A. Felipe, Ph.D.
.  Yale University Molecular Biophysics and Biochemistry
.  (203)432-6428