A novel chemosensor for Ag(I) ion based on its inhibitory effect on the luminol-H2O2 chemiluminescence response improved by CoFe2O4 nano-particles

CL emission spectra of luminol-H2O2-CoFe2O4 system in the absence and presence of Ag(I) ions in the range of 0.5−100 ng mL−1 along with CL intensity difference (ΔICL) of (a) luminol-H2O2 and (b) luminol-H2O2-CoFe2O4 system in the absence and presence of Ag(I) ions versus Ag(I) concentration in the range of 0.5−100 ng mL−1 is shown.