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. 2012 May 18;12(5):6520–6537. doi: 10.3390/s120506520

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© 2012 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 5. — Cyclic voltammetric responses (on the left) and calibration curves (on the right), obtained from cyclic voltammetric measurements in PBS with increasing aliquots of drugs: CNT-electrode for etoposide (A), cytochrome P4503A4 for ifosfamide (B), cytochrome P4502B6 for cyclophosphamide (C), and P4501A2 for ftorafur (D). For the CNT-electrode the zoom in the oxidation peak at 220 mV is shown (A, on the left). For the electrodes modified with cytochromes we report the zoom of the reduction peak at −450 mV (B, C, and D, on the left). The measured drugs concentration falls in their pharmacological range. The voltammograms were acquired with drugs dissolved in PBS and at the scan rate of 20 mV/s.

Figure 5. — Cyclic voltammetric responses (on the left) and calibration curves (on the right), obtained from cyclic voltammetric measurements in PBS with increasing aliquots of drugs: CNT-electrode for etoposide (A), cytochrome P4503A4 for ifosfamide (B), cytochrome P4502B6 for cyclophosphamide (C), and P4501A2 for ftorafur (D). For the CNT-electrode the zoom in the oxidation peak at 220 mV is shown (A, on the left). For the electrodes modified with cytochromes we report the zoom of the reduction peak at −450 mV (B, C, and D, on the left). The measured drugs concentration falls in their pharmacological range. The voltammograms were acquired with drugs dissolved in PBS and at the scan rate of 20 mV/s.