| 摘要 |
A biosensor apparatus for analysing a sample comprises: (i) a biosensor unit (1) having a liquid flow path therethrough between an inlet (3) and an outlet (4) of the unit, said unit comprising (a) an electrode assembly comprising at least one working electrode comprised of a conductive carrier substrate having a surface coated with mercury immobilised on the surface of the substrate, (b) a counter electrode, and (c) a reference electrode (12), (ii) a liquid supply arrangement (11 ) for supplying a flow of electrolyte to the inlet (3) of the biosensor unit, (iii) a phospholipid supply arrangement (8) for introducing phospholipid into electrolyte flow to the inlet (3) of the biosensor unit for deposition on the exposed surface of the mercury, (iv) a sample supply arrangement (9) for introducing the sample to be analysed into electrolyte flow to the inlet (3) of the biosensor unit, and (v) means (13) for determining variations in the differential capacitance of phospholipid deposited on the mercury as a function of potential against the counter electrode. |
