Dear All,

On the occasion of Natalies's problem with the Zn reduction of her 
water samples I would like to ask if someone has given any thought 
(or a shot even) to reduce water samples using Mn?

Given the fact that its redox potential (-1.18 V) is smaller than 
that of Zn (-0.7628 V) in acidic solutions it would appear to be the 
more obvious candidate. What's more, is doesn't develop an "oxid-skin" 
that renders its surface more or less inert.

I always wanted to try this one since I observed that Mn is capable 
to reduce NO3- down to NH4+ in an aqueous suspension.

Any thoughts and/or comments?

Cheers,
                 Wolfram


*****************************
Dr. W. Meier-Augenstein
Hon. Lecturer in Chemistry

University of Dundee
Dept. of Anatomy & Physiology
Small's Wynd
DUNDEE  DD1 4HN
Great Britain

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