Water absorbance spectrum12/8/2023 ![]() Maréchal, The molecular structure of liquid water delivered by absorption spectroscopy in the whole IR region completed with thermodynamics data, J. Effect of temperature and of H/D isotopic dilution J. The conclusions in this work was shown to be compatible with the works by Y. factor analysis of the temperature effect on H2O and D2O, J. Chapados, Isotope effects in liquid water by infrared spectroscopy. The original figure was from David Weis.ġ502. Devlin, (Springer-Verlag, Berlin, 2003) pp. Sadtchenko, Thin film water on insulator surfaces, in Water in Confining Geometries, eds V. H2O and D2O spectra from 6000 to 0 cm-1, J. The absorption spectrum demostrates the so-called blue-green window of water: absorbance in the near ultraviolet (350-400 nm) and at blue and green wavelengths. Zelsmann, Temperature dependence of the optical constants for liquid H2O and D2O in the far IR region, J. Thompson (Pergamon Press Ltd, London, 1959) pp. Pauling, The structure of water, In Hydrogen bonding, Ed. Kauzmann, The structure and properties of water (Oxford University Press, London, 1969) (b) The dodecahedral interstitial model is described in L. Blue-shifting hydrogen bonds are described elsewhere.Ĩ. Afterwards, the sample was diluted with distilled water at a ratio of 1:30 or 1:50, and its absorbance spectrum was measured again. Then, the sample and polymer mixture were mixed for 2 min at 90 rpm and its absorbance spectrum was measured. the bending frequency increased ( v 2, 1644 cm -1 ) by hydrogen bonding.Īs seen, increased strength of hydrogen bonding typically shifts the stretch vibration to lower frequencies (red-shift) with greatly increased intensity in the infrared (but not Raman) due to the increased dipoles. First, the sample was spiked with polymer to give the desired polymer concentration.The main stretching band in liquid water is shifted to a lower frequency ( v 3, 3490 cm -1 and v 1, 3280 cm -1 ) and.On the right half of the Figure, the high (HDL) and low (LDL) density liquid water forms are shown. Above is shown a comparison of the gas, liquid and solid spectra of the same amount of H 2O.
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