Virtual instrumentation for electro-analytical measurements

This paper deals with some applications of Virtual Instrumentation to elect roanalytical measurements. Virtual Instruments (VIs) are software programme s that simulate the external appearance and functions of a real instrument on the screen of a computer. In this work, programmes have been developed t o control the potential of a working electrode (through a suitable potentio stat), acquire the current response, process the acquired current signal an d control a peristaltic pump and injection valve. The sequence of operation s was controlled by the VI. The programmes developed have been applied to a mperometric and voltammetric measurements in static and flowing solutions. The VI package that has been used was LabVIEW 4.0.1 from National Instrumen ts.