Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10558581 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2005 | 5 Pages |
Abstract
An inductively coupled plasma-atomic emission spectrometry (ICP-AES) method is developed for determination of Cd, Co, Cr, Cu, Ni, Tl and Zn in traces in calcite, CaCO3, dolomite, CaMg(CO3)2, and gypsum, CaSO4. Interferences of a Ca/Mg matrix on analyte intensities were investigated. The results reveal that Ca does not interfere with Cr, Ni and Zn, but tends to decrease the intensity of the other elements. Magnesium as a matrix element does not interfere on with Zn, but increases the intensities of Ni, Cr and Cu, and decreases the intensities of Cd, Co and Tl. To eliminate these matrix interferences on trace element intensities, a flotation separation method is proposed. Lead(II) hexamethylenedithiocarbamate, Pb(HMDTC)2, is applied as a collector for flotation of trace elements from acidic solutions of mineral samples. The flotation of acidic aqueous solutions of calcite, dolomite and gypsum was performed at pH 6.0, using 10 mg lâ1 Pb and 0.3 mmol lâ1 HMDTCâ added to 1 l of solution tested. The method detection limits of analytes in different minerals range from 0.02 to 0.06 μg gâ1 for Cd, 0.04 to 0.10 μg gâ1 for Co, 0.03 to 0.13 μg gâ1 for Cr, 0.02 to 0.16 μg gâ1 for Cu, 0.09 to 0.30 μg gâ1 for Ni, 6.45 to 7.71 μg gâ1 for Tl and 0.18 to 0.20 μg gâ1 for Zn.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Vesna Zajkova Paneva, Katarina Äundeva, TrajÄe Stafilov,