Potentiometric biosensor for urea based on electropolymerized electroinactive polypyrrole
1997; Elsevier BV; Volume: 42; Issue: 3 Linguagem: Inglês
10.1016/s0013-4686(96)00226-5
ISSN1873-3859
AutoresShinichi Komaba, Michiko Seyama, Toshiyuki Momma, Tetsuya Ōsaka,
Tópico(s)Conducting polymers and applications
ResumoA urea biosensor was developed by immobilizing urease into an electropolymerized electroinactive polypyrrole (PPy) on a platinum electrode. This enzyme-immobilized PPy electrode showed a stable potential response to urea based on the pH response of the electroinactive PPy film electrode. The electropolymerization conditions were optimized, and thus the biosensor showed a Nernstian response with a slope of 31.8 mV decade−1 over concentration range of 1 × 10−4 − 0.3 mol dm−3 urea.
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