Qualitative and quantitative characterization of elements by X-ray fluorescence technique in mineral supplement for livestock. I. Wavelength dispersion

Abstract

To evaluate the micro-elements Mn, Fe, Co, Cu and Zn concentration in mineral supplement for livestock, a methodology was developed using the wavelength dispersive X-ray fluorescence (WD-XRF) instrumental analytical technique, with Rh targel X-ray tube (40 kV, 30 mA) and gas flow and NaI(Tl) solid scintillation detectors. Using the standard-addition technique and linear multivariate statistical model, it was concluded that there was no matrix effect among the micro-elements in the analysis of the samples diluted with boric acid (1:2), and that, simple linear regressions can be utilized to quantify these micro-elements.