Application of X-Ray Fluorescence to Determination of Metals in Commercial Tablets Containing Digoxin

Abstract

With the aid of the analytical energy dispersive X-ray fluorescence technique with radioisotope excitation, the concentrations of metals in commercial tablets containing 0.25 mg of digoxin were estimated. Concentrations ranging from 2.99 to 10.70 mg of Fe; 1.59 to 2.30 mg of Ni; 0.94 to 5.48 mg of Cu and 0.11 to 5.72 mg of Zn were found per tablet analyzed. The experimental detection limits for these elements varied from 13.03 to 22.57 mg l À1 , while the relative errors made in the quantification of these metals were lower than 15%.

Determination of Trace Elements inAlternanthera brasilianaandPfaffia glabrataby SRTXRF: Application in Environmental Pollution Control

“…The x-ray spectra obtained were interpreted with the aid of AXIL software, [10,19,20,25] determining the energy of peaks present and their respective net intensities. The x-ray spectra obtained were interpreted with the aid of AXIL software, [10,19,20,25] determining the energy of peaks present and their respective net intensities.…”

Determination of trace elements in water and sediment samples from Ismaelia Canal using ion chromatography and atomic absorption spectroscopy

“…Determination of the concentrations of trace heavy elements in environmental samples is difficult and the results obtained often vary according to the chosen analytical technique (Soylak et al, 2002;Zhang et al, 2002;Köklü et al, 2000;Rauf et al, 2002;Tsikrizis et al, 2002;Orescanin et al, 2002;Zucchi et al, 2002).…”