Fig. 2From: Absorption mechanisms of Cu2+ on a biogenic bixbyite-like Mn2O3 produced by Bacillus CUA isolated from soilNormalized X-ray absorption edges and second derivatives of XANES of all samples and the reference compounds (a) normalized X-ray absorption edges of sorption samples and some reference compounds. b Second derivatives of XANES features of sorption samples and the reference compoundsBack to article page