Bruker QUANTAX EDS - Standard-based Cliff-Lorimer Quantification

User Manual 5 Step-by-Step Guides
92
5.13.2
Standard-based Cliff-Lorimer Quantification
This guide describes the Cliff-Lorimer quantification of electron-transparent samples using
standard samples.
Step
Example/hints
1
Load or create a standards library
containing theoretical Cliff
-Lorimer
factors.
Follow section 5.11.2.
2
Select
the or
workspace and
Acquire or open a spectrum of the
reference/standard sample. The sample
should contain elements which are present in
the “unknown” sample
.
a) a spectrum
b)
Use the Spectrum chart icon to
open a spectrum.
3
Follow step 3 to 7 of standardless Cliff-
Lorimer quantification to identify
elements, set background regions and
ensure correct deconvolution.
Refer to section 5.13.1. Set quantification
Method mode to
Interactive ( ) to access
the
QUANTIFICATION dialog.
4
Click
.
The EDIT STANDARD PROPERTIES dialog
pops up.
5
Enter reference element concentration
values for standard sample.
Use Mass% or Atomic-%.
6
C
lick .
The VALIDATION dialog pops up with new
and old Cliff-Lorimer factors.
7
Select an element as reference.
The CL-factor of this element will not be
changed. Advice:
Keep a higher atomic
number value as reference.
8
Click
to close the VALIDATION
dialog
.
The modified Cliff-Lorimer factors will be
marked red in th
e Cliff-Lorimer factor list in
the s
tandards library (see section 5.11.2).
NOTE: Save the updated standards library.
9
Click
to close the
QUANTIFICATION dialog.
10
Perform quantification of “unknown”
sample
.
Follow section 5.13.1. The process is the
same as for standardless Cliff
-Lorimer
factors. The updated standard
-based Cliff-
Lorimer factors will be used
for the
quantification.