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Highly sensitive amperometric creatinine sensors based on the adsorption of three enzymes are described. The base electrodes are fabricated using electrochemical deposition of Pt black on a flexible electro-conductive polymer film (polyanion doped polypyrrole). The multienzyme system (creatininase, creatinase and sarcosine oxidase) is adsorbed at the Pt black matrix. After drying a thin gelatin...
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