Fig. 2
From: Diamine oxidase-modified screen-printed electrode for the redox-mediated determination of histamine
Effect of the measuring potential and glutaraldehyde and hexacyanoferrate (III) concentration on the analytical signal (Δi) for 25 and 75 mg L−1 histamine. Experimental conditions: (a) DOX/GA/[Fe(CN)6]3−, 0.50 mg μL−1/0.50%/5.0 mM; (b) DOX/[Fe(CN)6]3−, 0.50 mg μL−1/5.0 mM; and (c) DOX/GA, 0.50 mg μL−1/0.50%. Average values ± SD obtained with three different sensors are represented