Figure 11. Square-wave voltammograms of 0.1 M potassium-phosphate buffer (pH 7.4) containing 0.05 М NaCl, 1% methanol (v/v) (‒), 100 µM (S)-naproxen (‒ ‒ ‒) or 100 µM (S)-O-desmethylnaproxen (· · ·). Square wave frequency, 25 Hz.