Figure 1: Characterization of AgNPs by UV-VIS spectrophotometer (A)PVP-AgNPs; (B)Na-Citrate-AgNPs(C); Chitosan-AgNPs; (D)SDS-AgNPs. A common peak at 297 nm that indicate the presence of NO3- ions and peak present in the range of 340-540 nm is an indication of agglomerated silver nanoparticles with a wide range of size distribution.