ATTENUATED TOTAL REFLECTANCE SPECTROSCOPY: AN OVERVIEW
Journal Title: Int J of Pharm Res & Analy - Year 2014, Vol 4, Issue 4
Abstract
Attenuated Total Reflectance (ATR) is today the most widely used FTIR sampling tool. ATR generally allows qualitative or quantitative analysis of samples with little or no sample preparation which greatly speeds sample analysis. The main benefit of ATR sampling comes from the very thin sampling path length or depth of penetration of the IR beam into the sample. This is in contrast to traditional FTIR sampling by transmission where the sample must be diluted with IR transparent salt, pressed into a pellet or pressed to a thin film, prior to analysis to prevent totally absorbing bands in the infrared spectrum. In transmission spectroscopy, the IR beam passes through the sample and the effective path length is determined by the thickness of the sample and its orientation to the directional plane of the IR beam
Authors and Affiliations
S. Swathi , Sharada Srikanth , V. Uma Maheswara Rao
Keywords
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