>Hi All,
>
>What is the best method for dissolution of 
>gypsum for d34S and d18O-SO4 analyses?
>
2.5N HCl, 1 hr @ 80 deg C; filter (Whatman #41) 
and add 5% BaCl2 to the filtrate. Allow to 
decant, drain the solution, wash thoroughtly , 
dry and ready for analysis.


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Dr. Clemente Recio
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