کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1988465 | 1063307 | 2007 | 7 صفحه PDF | دانلود رایگان |
A novel hydrogen peroxide biosensor was fabricated for the determination of H2O2. The precursor film was first electropolymerized on the glassy carbon electrode with p-aminobenzene sulfonic acid (p-ABSA) by cyclic voltammetry (CV). Then thionine (Thi) was adsorbed to the film to form a composite membrane, which yielded an interface containing amine groups to assemble gold nanoparticles (nano-Au) layer for immobilization of horseradish peroxidase (HRP). The electrochemical characteristics of the biosensor were studied by CV and chronoamperometry. The factors influencing the performance of the resulting biosensor were studied in detail. The biosensor responded to H2O2 in the linear range from 2.6 × 10− 6 mol/L to 8.8 × 10− 3 mol/L with a detection limit of 6.4 × 10− 7 mol/L. Moreover, the studied biosensor exhibited good accuracy and high sensitivity. The proposed method was economical and efficient, making it potentially attractive for the application to real sample analysis.
Journal: Journal of Biochemical and Biophysical Methods - Volume 70, Issue 3, 10 April 2007, Pages 407–413