Simultaneous determination of codeine and caffeine using single-walled carbon nanotubes modified carbon-ceramic electrode

- Electrocatalytic oxidation of codeine and caffeine on the SWCNT/CCE.
- Simultaneous determination of codeine and caffeine on the SWCNT/CCE.
- The method has wide linear range, low detection limit and high selectivity.
- It is the first report about the simultaneous determination of codeine and caffeine on the SWCNT/CCE.