Abstract：Ferric-containing dust and sludge standard samples used for X-ray fluorescence spectrometric (XRF) analysis, consisting of nine elements including Fe,Mg,Al,Si,P,Ca,Ti,Mn, Zn, were prepared by mixing the ferric-containing dust and sludge raw materials with chemically pure oxide in proportion. The homogeneity and stability for standard samples were tested by X-ray fluorescence spectrometry. The experiment data were examined by means of variance analysis and t-test, proving that when the significance level a=0.05, the homogeneity of standard samples within and between unit met the requirements of national standard substance; after three times of analysis of standard samples within twelve months, no significant variation was found, i.e., the stability was excellent. The certification of the standard sample was introduced by wet chemical analysis and inductively coupled plasma atomic emission spectrometry (ICP-AES). The content of each element in standard samples was of evenly-gradient distribution, which could cover the content range in ferric-containing dust and sludge. The developed standard samples were applicable for quantitative XRF analysis of ferric-containing dust and sludge.
