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Research Article

An amperometric biosensor for fish freshness detection from xanthine oxidase immobilized in polypyrrole-polyvinylsulphonate film

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Pages 275-279 | Received 22 Sep 2011, Accepted 22 Nov 2011, Published online: 16 Jan 2012

Figures & data

Figure 1. The SEM of the Pt/PPy-PVS electrode.

Figure 1. The SEM of the Pt/PPy-PVS electrode.

Figure 2. The SEM of the Pt/PPy-PVS-XOD electrode.

Figure 2. The SEM of the Pt/PPy-PVS-XOD electrode.

Figure 3. The effect of pH on the activity of the Pt/PPy-PVS-XOD electrode.

Figure 3. The effect of pH on the activity of the Pt/PPy-PVS-XOD electrode.

Figure 4. The effect of temperature on the activity of the Pt/PPy-PVSXOD electrode.

Figure 4. The effect of temperature on the activity of the Pt/PPy-PVSXOD electrode.

Figure 5. The calibration curve of the Pt/PPy-PVS-XOD electrode.

Figure 5. The calibration curve of the Pt/PPy-PVS-XOD electrode.

Figure 6. The effect of hypoxanthine concentration upon the amperometric response of the Pt/PPy-PVS-XOD electrode (Michealis-Menten plot).

Figure 6. The effect of hypoxanthine concentration upon the amperometric response of the Pt/PPy-PVS-XOD electrode (Michealis-Menten plot).

Figure 7. The effect of hypoxanthine concentration upon the amperometric response of the Pt/PPy-PVS-XOD electrode (Lineweaver-Burk plot).

Figure 7. The effect of hypoxanthine concentration upon the amperometric response of the Pt/PPy-PVS-XOD electrode (Lineweaver-Burk plot).

Figure 8. The storage stability of the Pt/PPy-PVS-XOD electrode.

Figure 8. The storage stability of the Pt/PPy-PVS-XOD electrode.

Figure 9. The measure number of the Pt/PPy-PVS-XOD electrode.

Figure 9. The measure number of the Pt/PPy-PVS-XOD electrode.

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