title: Historical perspective and modern applications of Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR).
abstract: Vibrational spectroscopy has a long history as an important spectroscopic method in chemical and pharmaceutical analysis. Instrumentation for infrared (IR) spectroscopy was revolutionized by the introduction of Fourier Transform Infrared (FTIR) spectrometers. In addition, easier sampling combined with better sample-to-sample reproducibility and user-to-user spectral variation became available with attenuated total reflectance (ATR) probes and their application for in situ IR spectroscopy. These innovations allow many new applications in chemical and pharmaceutical analysis, such as the use of IR spectroscopy in Process Analytical Chemistry (PAC), the quantitation of drugs in complex matrix formulations, the analysis of protein binding and function and in combination with IR microscopy to the emergence of IR imaging technologies. The use of ATR-FTIR instruments in forensics and first response to 'white powder' incidents is also discussed. A short overview is given in this perspective article with the aim to renew and intensify interest in IR spectroscopy.
authors: Los Alamos National Laboratory, Bioscience Division, Los Alamos, NM 87454, USA.
authors: Marc-Michael
authors: MM
authors: Blum
authors: Harald
authors: H
authors: John
mesh_terms: D004867:Equipment Design; D044707:Forensic Sciences; D049673:History, 20th Century; D049674:History, 21st Century; D004364:Pharmaceutical Preparations / Q000737:chemistry; D011506:Proteins / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared / Q000266:history / Q000295:instrumentation / Q000379:methods*
chemical_list: D004364:Pharmaceutical Preparations; D011506:Proteins