Related Experiment Video
Updated: Jun 5, 2026

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research
Published on: April 18, 2013
Fabrication of new solid state phosphate selective electrodes for environmental monitoring
Fikru Tafesse1, Martin Enemchukwu
1Department of Chemistry, University of South Africa, Pretoria, South Africa. Tafesf@unisa.ac.za
Abstract:
A highly selective and sensitive phosphate sensor has been fabricated by constructing a crystal disk consisting of variable mixtures of aluminium powder (Al), aluminium phosphate (AlPO(4)) and powdered copper (Cu). The membrane sensor exhibits linear potential response in the concentration range of 1.0×10(-1) to 1.0×10(-6) mol L(-1). The proposed sensor also exhibits a fast response time of <60s. Its detection limit is lower than 1.0×10(-6) mol L(-1). The electrode has a long lifetime and can be stored in air when not in use. The selectivity of the sensor with respect to other common ions is excellent.

