PARTICLE-SIZE

MASS@sauron.quimica.uniovi.es
Fri, 26 Apr 1996 16:04:52 +0000 (WE)

Hi Rietveld Users:

We are working in Rietveld and ab-initio powder structure

determination. For sample preparation we use hand grinding

in an agate mortar and a 37 microns sieve but successive

experiments show variations in the intensities of the peaks.

We know that to obtain accurate X-ray diffraction intensities

from a powder sample require that the grain size be small,

at least 10 microns and preferably small.

The question is how to obtain these particle-sizes and

how to sieve powders so small.

I would be very gratefully if someone could answer me.


Thanks in advance

Miguel A. Salvado

Miguel A. Salvado
Dpto. Quimica Fisica y Analitica
Facultad de Quimica
Universidad de Oviedo
C/ Julian Claveria 8
33006 - OVIEDO
Spain

E-mail: mass@sauron.quimica.uniovi.es