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Soil Science Society of America Journal Abstract -

Infrared Analysis of Partially Deuterated Water Adsorbed on Clay1


This article in SSSAJ

  1. Vol. 34 No. 2, p. 339-343
    Received: June 25, 1969
    Accepted: Dec 12, 1969

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  1. Ralph A. Leonard2



Partially deuterated water (HDO) adsorbed on Na+, K+, Mg2+, and Ca2+ saturated montmorillonite clays was studied by use of infrared spectroscopy. Positions of the primary O-D absorption band of adsorbed HDO were 2533, 2530, 2506, and 2526 cm-1, respectively. In addition, a small secondary band was found at 2670 cm-1. This band may arise from an O-D group very weakly H-bonded to a surface oxygen, or to water isolated in hexagonal cavities in the surface. No evidence of strong H-bonding to the mineral surface was evident. Findings indicate that at low water contents, the exchangeable cation exerts the dominate force affecting the structure of the adsorbed water.

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