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Chapter: Pharmaceutical Drug Analysis: Ultraviolet and Absorption Methods

Ultraviolet and Absorption Methods

Comparatively older methods of analysis, such as colorimetry is entirely based upon the interaction of specifically visible light with a sample.

ULTRAVIOLET AND ABSORPTION METHODS

 

INTRODUCTION

In the earlier sections of this part, the various analytical methods based upon the measurements of mass and volume have been described at sufficient length with their typical applications in the analysis of pharmaceutical substances. Comparatively older methods of analysis, such as colorimetry is entirely based upon the interaction of specifically visible light with a sample. In this particular instance, just the visible portion of the electromagnetic radiation spectrum within the range of 400 and 700 nanometers (nm) to which a human eye is sensitive, has been employed. In a situation whereby the sample is made to interact with a wide spectrum of wavelengths in a given zone of electromagnetic radiation, consequently giving rise to a collection of measurement signals as a function of wavelength is termed as a spectrum, ultimately putting forward the most common terminology spectrochemical analysis or spectroscopy.

 

 

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Pharmaceutical Drug Analysis: Ultraviolet and Absorption Methods : Ultraviolet and Absorption Methods |


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