[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.
Département de Chimie Physique, Faculté de Pharmacie, Porto, Portugal.
J L
JL
Lima
M
M
Conceição
B S
BS
Montenegro
A M
AM
da Silva
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.