"The low molar absorptivity of adsorption bands in the NIR
region (typically between 0.01 and 0.1 l mol–1 cm–1) severely
restricts sensitivity; however, it permits operation in the
reflectance mode and hence the recording of spectra for solid
samples."
(Critical Review
Near-infrared spectroscopy in the pharmaceutical
industry
M. Blanco*, J. Coello, H. Iturriaga, S. Maspoch and C. de la Pezuela
Analyst, August 1998, Vol. 123 (135R–150R))
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