chemical imaging (as quantitative – chemical mapping) is
the analytical capability to create a visual image of components
distribution from simultaneous measurement of spectra and spatial, time
information.[1][2]
The main idea - for chemical imaging, the analyst may choose to take
as many data spectrum measured at a particular chemical component in
spatial location at time; this is useful for chemical identification and
quantification. Alternatively, selecting an image plane at a particular
data spectrum (PCA
- multivariable data of wavelength, spatial location at time) can map
the spatial distribution of sample components, provided that their spectral signatures are different at the selected data spectrum.
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