| چکیده انگلیسی مقاله |
The world of technology is ever changing, but some of these changes not only in a specific field of technology and covers a wide range of technologies. Experts believe, nanotechnology including changes to the services and, therefore, there is stiff competition between the countries on its head. Nanotechnology has the potential to improve human performance, sustainable materials, water, energy and food, protection from bacteria and viruses and even lowering agents known to disturb public order and the development of the sector, a key precondition for the development of other technologies, including biotechnology and the digital. In this paper, a new type of iron oxide magnetic nanoparticles modified with polymers synthesized that for the identification of the absorption have been used infrared spectroscopy and for to study the particle size have been used the TEM device,VSM and TGA. The synthesized nanoparticles were used for microextraction of heavy metal lead in a variety of natural and environmental and health and beauty samples. The use of these particles for absorption of heavy metals has been tested and determined that these particles are very selective for the extraction of toxic mercury and lead. Magnetic nanoparticles have many advantages such as non-toxicity, biocompatibility, much shorter extraction time, avoiding the use of organic solvents, low cost, ease of use, high accuracy, recovery and adsorption capacity due to the nanostructure and a high ratio of surface to volume. This new type of nanoparticles synthesized by modifying the polymer particles, which functional groups and active sites increased with ability bonding heavy metal ions. The nanoparticles in a polymer matrix prevent their accumulation and leaking in the environment. |