As a representative example of the results obtained, Fig. 3 (trace A) shows the color development as a function of time observed when the Griess reagent was spotted on the PAD, dried and stored at room temperature, under normal atmospheric conditions.
As arepresentative example of the results obtained, Fig. 3 (trace A)shows the color development as a function of time observed whenthe Griess reagent was spotted on the PAD, dried and storedat room temperature, under normal atmospheric conditions.