Determination of rare-earth elements,yttrium and scandium in manganese nodules by inductively-coupled argon-plastma emission spectrometry |
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Authors: | Terry Fries Paul J. Lamothe Joseph J. Pesek |
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Affiliation: | U.S. Geological Survey, Menlo Park, CA 94025 U.S.A.;Department of Chemistry, San Jose State University, San Jose, CA 95136 U.S.A. |
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Abstract: | A sequential-scanning, inductively-coupled argon plasma emission spectrometer is used for the determination of the rare-earth elements, plus yttrium and scandium, in manganese nodules. Wavelength selection is optimized to minimize spectral interferences from manganese nodule components. Samples are decomposed with mixed acids in a sealed polycarbonate vessel, and elements are quantified without further treatment. Results for U.S. Geological Survey manganese nodule standards A-1 and P-1 had average relative standard deviations of 6.8% and 8.1%, respectively, and results were in good agreement with those obtained by other methods. |
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