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ESCA study of the effect of bivalent metal ions on lead ion selective electrode membrane
Author(s) -
Young V. Y.,
Kar Chaudhari Sunetra N.,
Cheng K. L.
Publication year - 1981
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740030408
Subject(s) - bivalent (engine) , chemistry , membrane , ion , electrode , inorganic chemistry , metal , metal ions in aqueous solution , analytical chemistry (journal) , chromatography , organic chemistry , biochemistry
ESCA studies have been performed to investigate the exchange equilibria which occur between a lead ion selective electrode membrane containing multiple fixed sites due to surface degradation and various bivalent cations. The membranes have been exposed to solutions containing a single bivalent cation and to solutions containing Pb 2+ and an equal amount of a second bivalent cation. The changes in surface speciation have been inferred from spectral intensity data. The possibility of obtaining exchange equilibrium constants from ESCA intensity data has been investigated.