[meteorite-list] Nickel test

[Ingo Herkstroeter]

Hi Pierre-Marie and List!

I had problems with the Ni-test (with dimethylglyoxime) too. The problem is,
that this substance shows a reaction with Fe2+-ions too. So you don´t know,
if the pink reaction shows truly Ni or only iron (iron dissolves much more
better in HCl than Ni)!
It seems that there is only one way to be sure: use also H202
(hydrogenperoxide or hydrogensuperoxide) to oxidise the Fe2+-ions, than
testing with dimethylglyoxime. If you see pink, it´s Ni!

Hope this will help you.

Ingo/Germany


 --- Ursprüngliche Nachricht ---
> Von: Pelé Pierre-Marie <pierremariepele at yahoo.fr>
> An: MeteoriteList <meteorite-list at meteoritecentral.com>
> Betreff: [meteorite-list] Nickel test
> Datum: Fri, 6 Jan 2006 15:05:37 +0100 (CET)
> 
> Hello to the List,
> 
> a short question : is it possible that the Nickel Test
> is positive to terrestrial irons (or usual old iron
> forge residues) and which ones ?
> 
> Best regards,
> 
> Pierre-Marie PELE
> 
> 
> 	
> 
> 	
> 		
>
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