Chemical shifts and full widths at half maximum intensity (FWHM) of K alpha and K beta(1,3) X-ray emission lines were measured for the following Fe compounds: Fe, FeCl2, FeCl3 center dot 6H(2)O, FeF2, FeF2 center dot 4H(2)O, FeF3, FeF3 center dot 3H(2)O, FeO3, FeS2, FeSO4. The measurements were performed with a wavelength-dispersive X-ray fluorescence spectrometry (WDXRF). It was found that the calculated results for Fe compounds are strongly correlated with the oxidation state. At the same time chemical effects for halogens compounds are generally more than that other compounds. (C) 2011 Elsevier B.V. All rights reserved.