Mid-infrared fiber-optic attenuated total reflection spectroscopy of the solid-liquid phase transition of water.
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 H(2)O or at 2475 cm(-1) for D(2)O) 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.
Millo
Arnon
A
The School of Physics and Astronomy, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel.
Raichlin
Yosef
Y
Katzir
Abraham
A
D003198:Computer Simulation; D005336:Fiber Optic Technology / Q000295:instrumentation / Q000379:methods*; D008956:Models, Chemical; D055100:Optical Fibers; D044367:Phase Transition; D012031:Refractometry / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012996:Solutions; D013055:Spectrophotometry, Infrared / Q000295:instrumentation / Q000379:methods*; D013696:Temperature; D014867:Water / Q000032:analysis* / Q000737:chemistry*
D012996:Solutions; D014867:Water