د.عبدالناصر محمد التركي2026-10-132026-10-13https://dspace.academy.edu.ly/handle/123456789/2635Nanoparticles are defiened as any particle with a size less than 100 nm, but like most things in particle technology, a more thorough discussion is required to achieve an unambiguous and complete response. The current agreement among the standard group is that the scale from 1-100 nm defines the size range of nanoparticles. Below 1nm may be excluded in order to avoid calling clusters of atoms a particle, but the literature contains references to particles 1 nm. Since particles have three dimensions. the ASTM standard defines two or three dimensions must be between 1-100 nm. This applies for nanotubes with a diameter of 10 nm, but a length 100 nm. In nanotechnology, a particle is defined as a small object that behaves as a whole unit with respect to its transport and properties.Iron oxide nanoparticles (IONPs) can play a significant role in the removal of heavy metal from contaminated solution .Aresnite ,As(III) highly toxic,mobile and predominant species in arsenic contaminated water IONPs have been synthesized, characterized and tested for the removal of As(III) from arsenic contaminated water. In this work , we synthesized IONPs using a chemical method involving dispersion of Fe3+ ions through polymer molecules of poly vinyl alcohol (PVA) in aqueous medium X-ray diffraction (XRD) analysis confirmed the formation of a single phase rhomobohrdral crystal structure, the size of nanoparticles was 50-100 nm. Transmission electron microscopic images corborate the result of IONPs (50-100 nm) .IRON OXIDE NANOPARTICLES ASSISTED