Patent ID: 9005983
Filing Date: 2015-04-14
Classification: G01N

Abstract:
1. A method of detecting an analyte species in a liquid, the analyte species being selected from ions of the non-metal B and ions of the metals Cu, Fe, Co, Ni, Ba, Ca, Sr, Mo, W, Zn, Cd, Hg, Mg, Ra, Pb, Pd, Pt, and V, the method comprising: providing an electrochemical sensor comprising: a solid electrically conductive substrate and at least one compound immobilized thereon which contains both a sugar which is a di- or poly-hydroxy compound with binding affinity for the analyte species to be detected and a non-sugar redox system which displays electrochemical oxidation/reduction behaviour which is modified when the sugar binds the analyte species to be detected, contacting the liquid with the sensor, for binding of the analyte to the said compound immobilized on the substrate, and measuring the electrochemical oxidation/reduction behaviour of the redox system of said compound immobilized on the substrate.