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Nonlinear Estimation of the Equilibrium Potential for a Solid‐State Lead Ion‐Selective Electrode
Author(s) -
Watkins Peter
Publication year - 2005
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200303041
Subject(s) - nonlinear system , electrode , ion selective electrode , lead (geology) , fluoride , ion , nonlinear regression , range (aeronautics) , chemistry , analytical chemistry (journal) , thermodynamics , materials science , mathematics , inorganic chemistry , statistics , regression analysis , chromatography , physics , biochemistry , organic chemistry , quantum mechanics , geomorphology , composite material , selectivity , geology , catalysis
Nonlinear regression was applied to three empirical equations to model the response of a solid‐state lead ion‐selective electrode (ISE). One particular equation, previously reported to describe the response of a fluoride ISE, was found to also describe the response of a solid‐state lead ISE. Nonlinear regression was applied to the early portion of the response curve for the lead ISE and used to estimate the equilibrium potential for a range of test solutions.