Fig. 4From: Diamine oxidase-modified screen-printed electrode for the redox-mediated determination of histamineCurrent intensities obtained for blank and for 25-mg L−1 solutions of histamine (HIST), phenethylamine (PHE), spermine (SPE), tyramine (TYR), tryptamine (TRYPT), and putrescine (PUT) and for a mixture containing 25 mg L−1 of each of these biogenic amines (MIX). Average values ± SD obtained with three different sensors are representedBack to article page