Fig. 1.
SWASV scans for Hg detection in Atlantic hake sample. Gold-based screen-printed sensors were used. Applied digestion procedure: optimized H2O2/HCl treatment with carb-column purification. The experimental conditions were conditioning potential 0.7 V for 30 s, deposition potential 0.2 V for 120 s, equilibration time 30 s, SW amplitude 28 mV, step 3 mV and frequency 15 Hz.