ABSTRACT:

Spectroscopic techniques can be classified based on the types of ray, reaction between the material and the energy, the form of material used and the usages for which the assay is utilized. Several types of spectroscopies have been developed, but the most frequently-used spectrometer utilized for biochemical analyses include nuclear magnetic resonance (NMR), Raman spectroscopy, infrared spectroscopy, ultraviolet and visible spectroscopy, and atomic spectroscopy. This review highlights the main types of spectroscopies and their principle of action and other technical issue. Spectroscopic chemical analysis now plays a vital role in pharmaceutical manufacturing. It is used for medication identification and quality assessment, as well as detecting metal elements and compounds present in solid or water materials — not forgetting its significant value in medical diagnostics

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