I have done sem eds analysis for Hydroxyapatite and zeolite NaP composites, but no Na and Ca elements were detected at a 500× magnification, and there should be no Ti elements, and at a 2000× magnification there is no P, Si, Na, and Ca, should I use a 10,000× magnification, because in the reference I used the sem eds magnification for my sample was 10,000× and 20,000×?
Hello,
SEM-EDS is a microanalytical method, so that 0,6 grams is not the question, but the size of the sample.
Can you provide SEM images with the point/areas you have analyzed? (I don't understand the sentence with the magnifications)
Can you provide the beam parameters (energy, current)?
Was it (1) a point analysis or (2) an area analysis?
In case (1) a high beam current density may cause migration of elements like Na, or thermal effects.
Depending on the beam energy the excited volume may be several 100 nm wide...
What does this image show?
A dark powder on a bright uneven surface?
Which of the spectra were taken on this surface?
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