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Science 23 November 1973:
Vol. 182. no. 4114, pp. 819 - 821
DOI: 10.1126/science.182.4114.819
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Articles

Competitive Hydration of Quinazoline at the Montmorillonite-Water Interface

G. W. Bailey 1, D. S. Brown 1, and S. W. Karickhoff 1

1 Environmental Protection Agency, Southeast Environmental Research Laboratory, Athens, Georgia 30601

Ultraviolet spectroscopic analyses of suspensions of quinazoline and Na+-saturated montmorillonite have indicated that covalent hydration of the monovalent organic cation is inhibited at or near the clay surface. A similar lack of hydration was observed in solutions of quinazoline and high-ionic-strength calcium chloride. The inhibition is attributed to a local competition between quinazoline and the inorganic cations for water of hydration.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)