Infrared evanescent-absorption spectroscopy with chalcogenide glass fibers

Appl Opt. 1994 Sep 20;33(27):6315-22. doi: 10.1364/AO.33.006315.

Abstract

We have used telluride glass fibers fabricated in house to measure the evanescent-absorption spectra of water, methanol, ethanol, isopropanol, acetone, ethanoic acid, hexane, and chloroform. Furthermore, detection limits of less than 2 vol. % solute were obtained for mixtures of water and methanol, ethanol, isopropanol, acetone, and ethanoic acid. Techniques to reduce the detection limits are discussed.