@article{
  author = {H. M. Sarrafi, Amir, Konoz, Elahe, Shabani, Kobra},
  title = {The determination of Cu2+, Fe3+, Zn2+ and Pb2+ in real samples by flame atomic absorption spectrometry after their separation- preconcentration on 2-(2-nitrophenylazo)- naphthalen-1-ol loaded on activated carbon},
  journal = {Journal of the Iranian Chemical Research},
  year = {2012},
  volume = {5},
  number = {2},
  pages = {55-63},
  doi = {}
}