[meteorite-list] nickel test

From: mafer_at_domafer.com <mafer_at_meteoritecentral.com>
Date: Thu Apr 22 10:06:56 2004
Message-ID: <46977.24.69.255.202.1034043590.squirrel_at_140.186.45.27>

Hi Tom
This is out of Meteorites Messengers from space by Heide and Wlotzka: I've
added my comments in ()First, a small portion of the metal has to be disolved in acid. This can
be achieved by placing a drop of dilute hydrocloric acid 10% on the metal
surface. (this is avail all over and may be called muratic acid, the stuff
they use in pools...this in my imput not the authors)Atfer some time the acid will become yellow by the disolved iron. It can
now be removed with a pipette (or glass eye dropper I should think) and
placed on a white porcellain plate. (don't let your wife catch you using
her plates and make sure to turn it over and use the unglazed side so you
don't introduce outside metals used in the glaze, or use a piece of
unglazed floor tile) Here the acid is neutralized with a drop of dilute
ammonia. The proof of nickle is accomplished with dimethylgloxime. (you
might have to call around for this substance, try some pharmacies, or if
you know someone in a university lab, they may have it) A drop of 1%
solution of this reagent in alcohol (if you have a 100 ml vial, one
percent would be 1 ml of reagent, and fill the vile to the 100 ml line
with ethyl alcohol) is applied to the test solution. If nickle is present,
a red color or precipitation (precipitation will look like little red
flakes, very small)develops.Hope this helps you
Mark
>
> Hello List, Can any one tell me how to do a nickle test in a simple
> easy to understand&nbsp; way? I have no back ground in chemistry. : )
>
> Thanks, Tom
>
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Received on Mon 07 Oct 2002 10:19:50 PM PDT