[Benzoate determination in medicinal syrups with a PVC membrane ion selective electrode without inner reference solution].
Two electrodes sensitives to benzoate ion, without inner reference solution, in which tetraoctylammonium benzoate in dibutylphtalate (type A) or 2-nitrophenyloctylether (type B) immobilized in PVC are used in membranes, applied on a conductive support, were prepared. The response characteristics and behaviour of this low-cost electrodes are presented. The analytical application possibilities are discussed and shown as practical examples on analyses of the ion in medicals syrups.
Lima
J L
JL
Département de Chimie Physique, Faculté de Pharmacie, Porto, Portugal.
Conceição
M
M
Montenegro
B S
BS
da Silva
A M
AM
D001565:Benzoates / Q000032:analysis*; D001628:Beverages / Q000032:analysis*; D004566:Electrodes; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011199:Potentiometry
D001565:Benzoates
Dosage de benzoate dans des sirops médicamenteux à l'aide d'électrodes sélectives à membrane de PVC sans solution de référence interne.