Fig. 4From: Mössbauer and Raman spectroscopic characterization of iron and carbon in iron-loaded Japanese cypress charcoalCT-dependence of iron species yield in charcoal samples. Circle: iron-loaded charcoal synthesized by the one-step procedure, Triangle: iron-loaded charcoal synthesized by a two-step procedure, Brown: high-spin Fe3+, Blue: Fe3C, Green: α-Fe, Orange: γ-FeBack to article page