Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 45 8 2016 10 10 1044 1053 Zahra PANJALI Dept. of Occupational Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran Ali Akbar ASGHARINEZHAD Dept. of Applied Chemistry, School of Chemistry, Shahid Beheshti University, Tehran, Iran Homeira EBRAHIMZADEH Dept. of Applied Chemistry, School of Chemistry, Shahid Beheshti University, Tehran, Iran Niloofar JALILIAN Dept. of Applied Chemistry, School of Chemistry, Shahid Beheshti University, Tehran, Iran Rasoul YARAHMADI Dept. of Occupational Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Seyed Jamaleddin SHAHTAHERI Dep.t of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran AND Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran 2016 08 28 2016 08 28 Background: The analysis of heavy metals at trace level is one of the main toxicologists concern, due to their vital rules in human`s life. Cadmium is one of these toxic heavy metals, which released to the environment from various industries. Methods: In order to determine Cd (II) ions in various matrices magnetic ion-imprinted polymer (IIP) method has been developed and applied. This nano-sorbent has been synthesized by coating an IIP compound on Fe3O4 nanoparticles core to achieve highest surface area. This polymer has been used to evaluate Cd (II) levels in food, river, and wastewater in Tehran, Iran. Results: Fe3O4@Cd-IIP was stable up to 300 ᵒC. The various factors such as sample pH (optimized as 7), elution/sorption time (5 min), eluent amount (4 mL HCL), and its concentration (2 mol L-1) were optimized. Analysis instrument in all steps was Flame Atomic Abortion Spectrophotometer (FAAS). In this study, the detection limit was determined down to 0.6 μg L-1. Conclusion: This method was applied successfully for the preconcentration and determination of Cd (II) ions in environmental samples obtained from rivers, various foods and wastewater. In addition, the accuracy of the method was confirmed by analyzing a certified reference material (Seronorm LOT NO2525) and spiked real samples.     https://ijph.tums.ac.ir/index.php/ijph/article/view/7606 https://ijph.tums.ac.ir/index.php/ijph/article/download/7606/5511