International Journal of Engineering and Information Systems (IJEAIS)   Year: 2020 | Volume: 4 | Issue: 12 | Page No.: 109-116 Optical Properties of Gum Arabic doping by Different Concentration of Iodine Using UV- Spectroscopy H. Mustafa, R. AbdElgani, Al desogi Omer Hamed, Abdalsakhi. S. Mohammed Abstract: In this work, Gum Arabic (Talha) Nano-material samples were prepared with different Concentration (0.1 ,0.3 ,0.5 ,0.7 and 0.9) m Molar by doping with Iodine. Optical Properties of Gum Arabic doping by Different Concentration of Iodine measured by using the UV- Spectroscopy min 1240. In this work study the effaced of different concentration on the optical parameters. For all samples the absorbance increases upon increasing the concentration, while the transmission decreases. The value of Energy band gap (Eg) was decreased from (4.420) eV to (4.323) eV.