• image 01
    Volume 1, No.1, 2012
  • image 02
    Volume 1, No.2, 2012
  • image 01
    Volume 1, No.3, 2012
  • image 02
    Volume 2, No.1, 2013
  • image 02
    Volume 2, No.2, 2013
  • image 02
    Volume 2, No.S1, 2013
  • image 02
    Volume 2, No.3, 2013
  • image 02
    Volume 2, No.4, 2013
  • image 02
    Volume 3, No.1, 2014
  • image 02
    Volume 3, No.2, 2014
  • Volume 3, No3
    Volume 3, No.3, 2014
  • Volume 3, No4
    Volume 3, No.4, 2014
  • Volume 4, No1
    Volume 4, No.1, 2015
  • Volume 4, No2
    Volume 4, No.2, 2015
  • Volume 4, No3
    Volume 4, No.3, 2015
  • Volume 4, No4
    Volume 4, No.4, 2015
  • Volume 5, No1
    Volume 5, No.1, 2016
  • image 01
  • image 02
  • Login|Register
  • Chem Sci Trans., 2012, 1(3),  pp 530-537  

    DOI:10.7598/cst2012.168

    Research Article

    Determination of Some Heavy Metals in Real Samples by FAAS after Preconcentration on 4-Nitro-2-(2-nitro-phenelazo)phenol Modified Activated Carbon

  • AMIR H. M. SARRAFIa*, ELAHE KONOZa* and AZADEH KHANMOHAMMADIb
  • aDepartment of Chemistry, Faculty of Science, Islamic Azad University,
    Central Tehran Branch, Tehran, Iran
    a*Department of Chemistry, Faculty of Engineering, Islamic Azad University,
    Gachsaran Branch, Gachsaran, Iran
  • Abstract

    A sensitive and simple method for determination of some heavy metals by flame atomic spectrometry after simultaneous preconcentration of trace heavy metals ions in some cereal and vegetable samples has been reported. The method is based on the adsorption of Cu2+, Fe2+, Zn2+ and Pb2+ on 4-nitro-2-(2-nitro-phenelazo)phenol (NNPP) loaded on activated carbon (AC). The adsorbed metals on activated carbon were eluted using 3 mL 4 mol L-1 nitric acid. The influences of the analytical parameters including pH, flow rate of sample and eluent, type and concentration of eluent, amount of adsorbent and sample volume were investigated. The recoveries of analytes were generally higher than 95%.

    Keywords

    FAAS, Heavy metals, Solid phase extraction, Activated carbon, 4-Nitro-2-(2-nitro-phenelazo)phenol

    This article has been viwed 2622 times

      

    Citations for this article 1

      

    Download Citations