Figures & data
Figure 1. Growth of PPy–DBS films in aqueous solution of 0.15 M pyrrole and 0.2 M DBS at a scan rate of 20 mV/s vs Ag/AgCl electrode (3.0 M KCl).
![Figure 1. Growth of PPy–DBS films in aqueous solution of 0.15 M pyrrole and 0.2 M DBS at a scan rate of 20 mV/s vs Ag/AgCl electrode (3.0 M KCl).](/cms/asset/5660ecda-a386-4ceb-9fa3-e26a37245f9a/ianb_a_1178133_f0001_c.jpg)
Figure 11. The effects of different concentrations of sodium dodecylbenzene sulphonate on amperometric response measurements.
![Figure 11. The effects of different concentrations of sodium dodecylbenzene sulphonate on amperometric response measurements.](/cms/asset/2c4f165e-e1fd-4aaa-90d1-741ce8aea8ab/ianb_a_1178133_f0011_c.jpg)
Figure 14. The effect of pH on the response of the biosensor (in the phosphate buffer (pH 7.0) containing 50 μM cholesterol at 0.4 V working potential).
![Figure 14. The effect of pH on the response of the biosensor (in the phosphate buffer (pH 7.0) containing 50 μM cholesterol at 0.4 V working potential).](/cms/asset/ba97cd55-a20e-48b0-97df-f1505a621671/ianb_a_1178133_f0014_b.jpg)
Figure 15. The effect of temperature on the response of the biosensor (at pH 7.0, 50 μM cholesterol at 0.4 V working potential).
![Figure 15. The effect of temperature on the response of the biosensor (at pH 7.0, 50 μM cholesterol at 0.4 V working potential).](/cms/asset/686d5f3c-da38-4fa3-b05e-373303109938/ianb_a_1178133_f0015_b.jpg)
Figure 16. The effect of cholesterol concentration on the response of the biosensor (at 0.1 M pH 7.0 the phosphate buffer, 25 °C, 0.4 V working potential).
![Figure 16. The effect of cholesterol concentration on the response of the biosensor (at 0.1 M pH 7.0 the phosphate buffer, 25 °C, 0.4 V working potential).](/cms/asset/5349aac2-ae18-4aaa-8d62-aa3e3b60b526/ianb_a_1178133_f0016_b.jpg)
Figure 17. The effect of cholesterol concentration on the response of the biosensor (Lineweaver–Burk plot at 0.1 M pH 7.0 phosphate buffer, 25 °C, 0.4 V working potential).
![Figure 17. The effect of cholesterol concentration on the response of the biosensor (Lineweaver–Burk plot at 0.1 M pH 7.0 phosphate buffer, 25 °C, 0.4 V working potential).](/cms/asset/c2796d4b-5bee-4424-8863-2a476f6807cd/ianb_a_1178133_f0017_b.jpg)
Figure 18. Operational stability of the biosensor in pH 7.0 phosphate buffer, 50 μM cholesterol 25 °C, 0.4 V working potential.
![Figure 18. Operational stability of the biosensor in pH 7.0 phosphate buffer, 50 μM cholesterol 25 °C, 0.4 V working potential.](/cms/asset/4d80a4ff-84db-4d32-a0b2-ddca3d2ab70a/ianb_a_1178133_f0018_b.jpg)
Figure 19. Storage stability of the biosensor in pH 7.0 phosphate buffer, 50 μM cholesterol 25 °C, 0.4 V working potential.
![Figure 19. Storage stability of the biosensor in pH 7.0 phosphate buffer, 50 μM cholesterol 25 °C, 0.4 V working potential.](/cms/asset/78f737c3-a794-4246-85d0-211cb0f7497b/ianb_a_1178133_f0019_b.jpg)
Table 1. Interfering substances on the amperometric response of the biosensor.