Mass spectrometric study of the deterioration of polystyrene-based ion-exchangers.
A mass spectrometric study of the aging effects in polystyrene-based ion-exchangers has been made. Fragments in the m/e range 10-70 were examined and attributed to OH(+), H(2)O(+), CO(+), CO(+)(2), supplemented by SO(+) and SO(+)(2) from sulphonic-acid cation-exchangers. Ion-current intensities were found to be dependent on the state of the resin.
Catalyst electrode specific for peroxide
(18) G. M. Armitage and S. J . Lyle, Talanta. 20, 315 (1973). (19) C. W. Plummer, J. Enos. A. 8. LaConti, and J . R. Boyack, Office of SaRECEIVED for review November 18, 1974. Accepted March 24, 1975. This research was supported in part by an Office of Water Resources Research Grant, No. A-053-WIS. AddiSummer Research Assistantship (R.A.N., 1972) is gratefully acknowledged. (Chem. Absfr., 71, 39693h (1969)).
Studies on the Hydrolysis of Metal Ions. Part 35. The Hydrolysis of the Lanthanum Ion, La3+.
Abstract : The hydrolysis equilibria of the La(III) ion have been studied at 25C by hydrogen ion concentration measurements, using a glass electrode. The total (La(III)) was varied between 0.1 and 1.0 M, whilst the concentration of the ClO4- ion was held constant at 3 M by the addition of LiClO4. The experimental conditions necessary for accurate results to be obtained, when the hydrolysis equilibria must be studied in poorly buffered solutions, are discussed in some detail.