FIELD: chemistry.
SUBSTANCE: biosensor electrode is made from platinum on a polypyrrole base with a mediator. The mediator used is a pyrrole derivative containing ferrocene. The bioreceptor used is an enzyme which is immobilised on magnetic nanoparticles of Fe2O4 with surface carboxyl groups for cross-linking with carbomide, wherein the biosensor electrode with the bioreceptor is placed in a housing made from semiconductor material with possibility of connection to a digital-to-analogue converter.
EFFECT: invention enables to obtain compact devices with short response time and high detection sensitivity.
3 tbl
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