... A New Approach to Determination of the Efficient Wavelength of Excitation Spectrum upon the Standardless X-Ray Fluorescence Analysis of Homogeneous Multicomponent Subject . Abstract The simple algorithm of calculation of an efficient wavelength of X-ray tube polychromatic emission spectrum during excitation of X-ray fluorescence of homogeneous sample was developed. ... Moscow University Chemistry Bulletin . 2007, Vol. ... Copyright (C) Chemistry Dept., Moscow State University, 2002 . ...