XRFS Determination of 12 Elements in Dolomite

XRFS was applied to the determination of 12 elements(i.e. Na, Mg, Al, Si, P, S, K, Ca, Mn, Fe, Ti and Zn)in dolomite. The sample was fused at 1 050 ℃ using Li2B4O7 and LiBO2 as flux, and LiBr as demoulding agent. The disc shaped sample was used for XRFS analysis. Working curve was prepared with 6 CRM′s of GBW07114, GBW 07216A, GBW 07217A, YSBC 11703-1995, YSBC 28722-1993 and YSBC 28723-1993. The mathematical models of matrix correction for the 12 elements were optimized. Values of RSD′s (n=11) were found in the range of 0.2%-7.3%. The proposed method was used in the analysis of a dolomite CRM, giving results in consistency with the certified values.