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Re: Radium carbonate: Solubility product
Private:
Franz Schoenhofer
Habicherg. 31/7
A-1160 Vienna, AUSTRIA
Phone: -43 699 11681319
e-mail: franz.schoenhofer@chello.at
Office:
MR Dr. Franz Schoenhofer
Federal Ministry for Agriculture, Forestry, Environment and Water Management
Dep. I/8U, Radiation Protection
Radetzkystr. 2
A-1031 Vienna, AUSTRIA
phone: +43-1-71100-4458
fax: +43-1-7122331
e-mail: franz.schoenhofer@bmu.gv.at
-----Ursprüngliche Nachricht-----
Von: Bjorn Cedervall <bcradsafers@HOTMAIL.COM>
An: radsafe@list.vanderbilt.edu <radsafe@list.vanderbilt.edu>
Datum: Mittwoch, 22. August 2001 15:14
Betreff: Radium carbonate: Solubility product
>I took a second look at the TFP site:
>http://radiation.org/ijhs092000_appen.html
>
>It was previously pointed out the radium will coprecipitate with strontium
>etc. I wonder if anyone in Radsafers land can give me an estimate
>(litterature reference would be nice) for the Ksp (solubility product
>constant) for radium carbonate at say 25 degrees C.
>
>For strontium the Ksp is in the order of 10E-9 to 10E-10 (I don't have it
>available at the time of writing).
>
>
Björn,
Unfortunately I do not have any more access to literature which I collected
for some decades. But since the Periodic System of Elements is said to have
been proposed mostly because of similarities of various elements I dare to
draw some conclusions to answer your question:
To my knowledge the solubility of earth alkali element compounds follow a
straight "line" of declining solubility: Ca-Sr-Ba-Ra. This implies that
radium will be preferentially precipitated.
Further inquiries welcome.
'Franz
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