Silver nanoparticle synthesis, UV-Vis spectroscopy to find particle size and measure resistance of colloidal solution

It is an important part in nanotechnology to produce nanoparticles with specific properties like particle size or resistance. To produce colloidal silver nanoparticles with specific size and resistance by Turkevich method, it is needed to synthesized silver nanoparticle with various molarity of AgNO3 and concentration of Trisodium citrate. UV-Vis spectrum was taken for the colloidal silver nanoparticle and analysed to roughly measure the particle size. That value was also cross checked by the optical theorem and weighed the resistance of colloidal solution for different parameters.