How can i understand which transition metal is there in a glass by uv-vis spectrum of glass? How reflectance help in this?? How can i measure intensity of transmittance by mrasuring maximum wavelength?
Any transition metal ion (Ni2+, Co2+, Co3+, Mn2+, Fe3+, Fe2+) has a typical UV-vis absorption spectrum. You can analyse them in your glass using
a) literature spectra (you have to search for them)
b) measure your own reference spectra
c) think about possible transitions (absorptions) from Tanabe-Sugano diagrams which are available in any inorganic textbook
Are the glasses transparent? If yes, you do not need reflectance spectra. But you could measure them and compare them with transmission spectra.
The last question is unclear. When doing your UV-vis absorption measurements (in transmission) you will measure the transmittance over the wavelength. So, what is the question?
thank you so much. that was helpful.
actually it will be how can I measure intensity from the data of transmittanace vs wavelength? Axel Klein
You get the relative intensity of individual minima (absorption bands) from the spectrum measured in transmittance (T) in %. 100% means no absorption, 0% means complete absorption (you should avoid this). When you reverse the spectrum you receive an absorption spectrum.
Hope this helps
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