Overlooking old good tricks is a mistake, SURELY.
Leonid Solovyov
>Flat-plate transmission? Is this a good example of an oxymoron or am I
> missing a trick here? Shome mishtake shurely.
>
>Martin Vickers
Flat-plate transmission? Is this a good example of an oxymoron or am I missing
a trick here? Shome mishtake shurely.
Martin Vickers
> Subject: RE: Amorphous content
> Date: Fri, 16 Nov 2007 06:33:49 -0800
> From: [EMAIL PROTECTED]
> To: rietveld_l@ill.fr
>
> For quantit
For quantitative analysis the flat-plate transmission geometry is much
more preferable as it is free of the microadsorbtion problem. Of
course, resolution is not so easily achievable in this geometry, but
one may use synchrotron at last.
Best regards,
Leonid Solovyov
>Thanks Reinhard and all for
21
E-mail: [EMAIL PROTECTED]
http://www.chem.umd.edu/facility/xray/
-Original Message-
From: Reinhard Kleeberg [mailto:[EMAIL PROTECTED]
Sent: Friday, November 16, 2007 3:14 AM
To: rietveld_l@ill.fr
Subject: Re: Amorphous content
We have positive experience with commercial ZnO pigment
We have positive experience with commercial ZnO pigments or chemicals,
heated to 700°C for about 2 hours in air for recrystallisation of the
amorphous ZnO or the spurious Zn carbonates/hydrates to get nearly 100%
crystalline ZnO. In 1:1 mixtures of the best NIST corundum, we found no
significan
At first glance it looks like a classic microabsorption problem, but I
don't have the linear absorption coefficients to hand. Using an
internal standard with a too small absorption will tend to over-estimate
the amorphous content. Ce versus Zn is a pretty big contrast for CuKa,
even if the parti
