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Determination of trace elements in natural water using X‐ray fluorescence spectrometry after preconcentration with powdered silica gel
Author(s) -
Yamini Y.,
Amiri N.,
Karimi M.
Publication year - 2009
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1201
Subject(s) - detection limit , chemistry , fluorescence , analytical chemistry (journal) , x ray fluorescence , silica gel , analyte , chelation , volume (thermodynamics) , mass spectrometry , nuclear chemistry , chelating resin , fluorescence spectrometry , chromatography , inorganic chemistry , metal , metal ions in aqueous solution , physics , organic chemistry , quantum mechanics
A simple and cheap method is described for simultaneous determination of V, Cr, Mn, Fe, Co, Ni, Cu and Zn contents in water by means of wavelength‐dispersive X‐ray fluorescence (WDXRF) spectrometry after preconcentration. The method of preconcentration is based on sorbing analytes onto silica gel powder. 1‐(2‐pyridylazo)‐2‐naphthol (PAN) is used as a chelating agent. The effect of some parameters such as pH, temperature, stirring time, amount of ligand, breakthrough volume and the limit of detection has been studied. The detection limits 0.120, 9.75 × 10 −4 , 0.075, 0.070, 0.061, 0.089, 0.029 and 0.044 mg l −1 were achieved for V, Cr, Mn, Fe, Co, Ni, Cu and Zn, respectively. Copyright © 2009 John Wiley & Sons, Ltd.