Hossein Tavallali and  Mohammad Ali Karimi and  Gohar Deilamy-Rad,  Speciation, Preconcentration, and Determination of Iron(II) and (III) Using 1,10-Phenanthroline Immobilized on Alumina-Coated Magnetite Nanoparticles as a Solid Phase Extraction Sorbent in Pharmaceutical Products.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2016, vol. 115(7). 829 - 832
    [viewed 15 October 2019]. Available from: https://publications.waset.org/pdf/10004784.