TY - JOUR
T1 - Study of the temperature behaviour of all-solid-state nonactin ammonium electrodes with PVC membrane applied to graphite-epoxy supports of varied composition
AU - M.c.s. Magalhães, Jùlia
AU - Céspedes, Francisco
AU - Alegret, Salvador
AU - A.s.c. Machado, Adélio
PY - 1997/11/28
Y1 - 1997/11/28
N2 - A study of the effect of the temperature on the response of all-solid- state ammonium selective electrodes prepared by casting PVC membranes with nonactin on supports of graphite-epoxy composites containing a variable amount of graphite up to 60% is presented. It is shown that while supports made of composites with 30% or less of graphite provide no adequate response characteristics, the variation of the percentage of graphite between 40 and 60% has no influence neither on the slope and standard potential temperature coefficients of the electrodes, nor on their isopotential point concentrations. The temperature hysteresis of the electrodes was found to be limited and also independent of the amount of graphite in the composite.
AB - A study of the effect of the temperature on the response of all-solid- state ammonium selective electrodes prepared by casting PVC membranes with nonactin on supports of graphite-epoxy composites containing a variable amount of graphite up to 60% is presented. It is shown that while supports made of composites with 30% or less of graphite provide no adequate response characteristics, the variation of the percentage of graphite between 40 and 60% has no influence neither on the slope and standard potential temperature coefficients of the electrodes, nor on their isopotential point concentrations. The temperature hysteresis of the electrodes was found to be limited and also independent of the amount of graphite in the composite.
KW - Conductive epoxy electrode
KW - Graphite-epoxy composite
KW - Nonactin ammonium electrodes
KW - PVC membrane ammonium electrodes
KW - Temperature effects
U2 - 10.1016/S0003-2670(97)00484-4
DO - 10.1016/S0003-2670(97)00484-4
M3 - Article
SN - 0003-2670
VL - 355
SP - 241
EP - 247
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 2-3
ER -