Using the M4 TORNADO Software
74
User Manual
6.4.1.2 Automatic element identification
The M4 TORNADO software also offers automatic procedures for the element identification. In
particular in Micro-XRF spectra there are several spectrum artefacts – deriving from the detector
like Escape, Tail and Shelf, and sum peak which can be calculated and considered. Others as
diffraction peaks deriving from the sample cannot be calculated, so automatic peak identification
should be only the first step. A further check of identified peaks in recommended.
Table 24 Automatic peak identification
Method Description
Automatic identification can be performed with
the button. This can be controlled by certain
method settings which can be changed either by
using the Method editor or they can be selected
directly without naming a method by using the
editor clicking on the downward-facing arrow
next to the button.
The opened Configuration dialog allows several
selections. The dialog contains the periodical table
of elements. Elements marked in grey are
“forbidden” elements.
Forbidden elements. The identification of peaks
may be ambiguous due to severe overlapping of X-
ray lines, when all elements of the periodic table are
to be considered in a given situation. To support
fully automatic element identification a list of
“forbidden” elements can be defined. “Forbidden”
elements are chemical elements that are unlikely to
be (or known not to be) present in the sample.
“Forbidden” elements can be set by double click
into the element symbol in the periodic table. The
same applies for changing their status.
List elements. This option uses the elements
marked (bold) in the periodic table. For full
quantitative methods, the use of a fixed list requires
knowledge of all elements to be expected in the
sample.
Search additional elements. Will perform an auto
identification of possible elements in the spectrum
taking into consideration a threshold value for the
minimum concentration (only a raw estimation).
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