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- E-ISSN 2288-8985
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Determination of Metal Elements in Mongolian Chromite
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.6, pp.766-774
Choi,
K. S., Lee,
C. H., Pyo,
H. Y., Park,
S. D., &
Joe,
K.
S.
(2000). Determination of Metal Elements in Mongolian Chromite. Analytical Science and Technology, 13(6), 766-774.
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Abstract
The major and trace constituents of Mongolian chromite were analyzed by ICP-AES. The dissolution procedures, mixed acid (<TEX>$HClO_4+H_3PO_4$</TEX>) digestion and fusion with <TEX>$Na_2O_2$</TEX> flux, have been studied to dissolve the chromite. The optimum dissolution method was found to be a fusion with <TEX>$Na_2O_2$</TEX> flux. The effect of large amount of Na on major and trace constituents was examined when these elements were determined by ICP-AES. There was no effect on major elements at a concentration of Na 250 mg/L solution. The emission intensity of trace constituents containing Na 1,250 mg/L decreased to 1.0-5.2% according to elements and wavelengths. The result of this method was compared with that of neutron activation analysis (NAA) to confirm the accuracy of this procedure. The results between two methods were in a good agreement within less than 5% for <TEX>$Al_2O_3$</TEX>, <TEX>$Cr_2O_3$</TEX>, MgO and -20 to 8% for Co, Mn, V, Zn, respectively.
- keywords
- Mongolian chromite, <TEX>$Na_2O_2$</TEX> fusion, ICP-AES
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