부산대학교 도서관

This paper attempts to resolve some disagreement between work reported by the authors and that reported by Sandhu, et al. on the photochemical reduction of uranyl ion by several dialkyl sulfides. Results of studies carried out to ascertain whether the differences in data resulted from the conditions of irradiation indicated that the difference did not lie in questions of intensity, position, or bandwidth of absorbed radiation nor in the choice of uranium (IV) salt or solvent. Redetermination of quantum yields for production of U(IV) from the disulfides with those obtained during photoreduction of ethanol still yielded results that do not agree with those published by Sandhu, et al. Good agreement is reported between the values of Stern-Volmer constants for the quenching of uranyl luminescence by dialkyl sulfides measured by the authors and those reported by Sandhu, et al.; however, a marked difference in kinetic reactivity toward R/sub 2/S between uranyl nitrate and acetate was noted. 9 references, 5 figures, 5 tables.