The construction of a microcomputer-controlled electrode switch for use in potentiometric determinations is described. This can be coupled to most of the analytical equipment usually found in laboratories, to enable a setting up of automatic systems capable of performing sequential determinations with several ion-selective electrodes. The assessment of its analytical usage and behaviour are dis...

electrochemical: Yellow Springs Instrument Co., Yellow Springs, OH 45387) for assaying galactose. For both fluorometric procedures, all reagents and standards were prepared as previously described (1). The manual assay requires 400 jiL of Tris buffer (10 mmolJL); 600 ,iiL of a solution containing p-hydroxyphenylacetic acid (50 mg/ L) and horseradish peroxidase (EC 1.11.1.7) (10 mgIL); 160 1zL o...

Voltammetric ion-selective electrodes (ISEs) based on poly(3-octylthiophene) (POT) in connection with ultra-thin membranes formulated different selective receptors (i.e., ionophores) are proposed for detection of lead, copper and silver ions (Pb2+, Cu2+ Ag+). The working mechanism the POT-membrane electrode is interconnected charge transfer processes both sides membrane, overall process dependi...

The work described here comprises the determination of Fe(III) by ion selective potentiometry using a coated-wire ion-selective electrode (CWISE) based on iron–cyclam complex. Linear Nernstian response for this electrode was obtained over the total Fe(III) concentration range of 1× 10−2 to 1× 10−6 M in 0.05 M HNO3, H2SO4, HClO4, HCl, KNO3 and KCl media, with a slope of 60± 5 mV per decade chang...