Keywords: آزمایشهای جریان جانبی; AAS; atomic absorption spectrometry; AuNPs; gold nanoparticles; Az; azotobactin; BSA; bovine serum albumin; CMCP; critical metal concentrations for pyoverdine; CV; cyclic voltammetry; CPG; controlled pore glass; DFB; desferrioxamine B; FI; flow injection;