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Stable Isotope Geochemistry

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Date:
Wed, 23 Mar 2005 08:40:56 +0100
Reply-To:
Stable Isotope Geochemistry <[log in to unmask]>
Subject:
Re: why do we use phosphoric acid to dissolve carbonate
From:
Clemente Recio <[log in to unmask]>
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Stable Isotope Geochemistry <[log in to unmask]>
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HCl and other acids are a solution in water, so your oxygen number would be
useless.

Not to mention the difficulties of getting a clean vacuum, as mentioned.

>Low vapor pressure is one of them.
>
>[log in to unmask] wrote:
>
>>What is the main reason we use phosphoric acid (H3PO4)to dissolve
>>carbonate for isotope analysis. Why NOT HCl or other acids?
>>
>>Thanks
>>
>>
>>




*******************************************
Dr. Clemente Recio
Laboratorio de Isótopos Estables
Fac. de Ciencias
Univ. de Salamanca
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