title: A Simple and Fast Method Based on New Magnetic Ion Imprinted Polymer as a Highly Selective Sorbent for Preconcentration and Determination of Cadmium in Environmental Samples.
abstract: 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 Fe3O4nanoparticles 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 °C. 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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Dept. of Occupational Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Panjali
authors.affiliation: Dept. of Applied Chemistry, School of Chemistry, Shahid Beheshti University, Tehran, Iran.
authors.forename: Ali Akbar
authors.initials: AA
authors.lastname: Asgharinezhad
authors.affiliation: Dept. of Applied Chemistry, School of Chemistry, Shahid Beheshti University, Tehran, Iran.
authors.forename: Homeira
authors.initials: H
authors.lastname: Ebrahimzadeh
authors.affiliation: Dept. of Applied Chemistry, School of Chemistry, Shahid Beheshti University, Tehran, Iran.
authors.forename: Niloofar
authors.initials: N
authors.lastname: Jalilian
authors.affiliation: Dept. of Occupational Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Rasoul
authors.initials: R
authors.lastname: Yarahmadi
authors.affiliation: Dep.t of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Seyed Jamaleddin
authors.initials: SJ
authors.lastname: Shahtaheri
keywords: Cd (II); Environmental samples; Magnetic ion imprinted polymer; Selective extraction