Mid-infrared fiber-optic attenuated total reflection spectroscopy of the solid-liquid phase transition of water

Arnon Millo, Yosef Raichlin, Abraham Katzir

Research output: Contribution to journalArticlepeer-review

Abstract

Measurements of mid-infrared (MIR) absorption spectra of water and heavy water were carried out by fiber-optic evanescent wave spectroscopy, using silver halide (AgClBr) infrared fibers. Such measurements were performed for the first time on one sample, during the solid-liquid phase transition. From the variation of the spectra with temperature we found a new isosbestic point (at 3280 cm-1 for H2O or at 2475 cm-1 for D 2O) and we identified five components of the O-H (O-D) stretch band. These phenomena have provided new information about the molecular structure of water.

Original languageEnglish
Pages (from-to)460-466
Number of pages7
JournalApplied Spectroscopy
Volume59
Issue number4
DOIs
StatePublished - Apr 2005

Keywords

  • Evanescent wave spectroscopy
  • Infrared absorption
  • Infrared fibers
  • Isosbestic points
  • Phase transition
  • Water

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