5Pournaghi-Azar M H,Fatemi B M.Simultaneous determination of ferric,ferrous and total iron by extraction differential pulse polarography:Application to the speciation of iron in rocks[J].MicrochemicalJournal,2000,65(3):199-207.
6Finkelshtein A L,Chubarov V M.X-ray fluorescence determination of the FeO/Fe2O3 ratio in igneous rocks[J].X-Ray Spectrometry,2010,39:17-21.
7Pepper S E,Borkowski M,Richmann M K,et al.Determination of ferrous and ferric iron in aqueous biological solutions[J].AnalyticaChemical Acta,2010,663(2):172-177.
8Yokoyama T,Nakamura E.Precise determination of ferrous iron in silicate rocks[J].Geochimica et Cosmochimica Acta,2002,66(6):1 085-1 093.
9Anastacio A S,Harris B,Yoo H,et al.A simple flow injection system with bead injection for trace iron determination[J1.Geochimica et Cosmochimica Acta,2008,72(7):5 001-5 008.
10Overbeck J T G.Microemulsions.In:THF.Sur factants[M].London:Acadcmic Press Inc.1984,113.
