Potentiometric determination of penicillins with ion-selective electrodes.
Quaternary ammonium, phosphonium and arsonium membrane electrodes sensitive to benzylpenicillin, ampicillin and oxacillin have been investigated. The order of merit of electrode performance is cetyltrioctylammonium > cetyltrioctylphosphonium > cetyltrioctylarsonium. The electrodes are suggested for use in rapid determination of penicillin drugs by direct potentiometry.
Yao
S Z
SZ
New Material Research Institute, Department of Chemical Engineering, Hunan University, Changsha 410012, People's Republic of China.
Shiao
J
J
Nie
L H
LH