Antarctica A Keystone in a Changing World · 1985 · 26 citations · 5 references
Natural SciencesEarth SciencesGeologyAnalytical ChemistryElemental AnalysisSedimentologyMineral AnalysisSediment AnalysisSediment ChemistrySediment CompositionTrace Element AnalysisDigestionInterlaboratory ComparisonsInterlaboratory StudyMultielement AnalysisMultielement DeterminationSediment Elemental AnalysisSediment GeochemistryWet Digestion
A relatively rapid, accurate, and precise method for the determination of seventeen elements (Fe, Mn, Al, Ti, Mg, Na, K, Ca, Cu, Zn, Pb, Cr, Ni, Co, Cd, Li, and Sr) in rocks and sediments, from as little as 250 mg of sample is presented. The method employs a wet digestion in Teflon (R) beakers using a combination of HF, HC104, and HN03 acids. Quantitation is carried out by atomic absorption spectrophotometry using mixed salt standards and matrix modifiers. Comparison of data generated by this procedure, with data for U.S. Geological Survey Standard Rocks, and National Bureau of Standards' sediments, as well as through interlaboratory comparisons on natural sediment samples, indicate that precise and accurate results can be obtained.
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