Determination of total manganese in silicates and Venezuelan laterites, using air-C2H2 and N2O-C2H2 flames by atomic absorption spectroscopy

J. J. Labrecque*, P. A. Rosales, G. A. Rada, R. Villalba, S. Yariv, E. Mendolovici

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Determination of Mn in synthetic solutions in the concentration range of typical decomposition solutions of Venezuelan laterites showed that a chemical interference from Si and sometimes from Al noted in the air-C2H2 flame are eliminated in the N2O-C2H2 flame. A comparison of the determination of Mn in both the air-C2H2 and N2O-C2H2 flame by standard-curve atomic-absorption spectroscopy resulted in slightly lower values for the air-C2H2 flame, whereas the N2O-C2H2 flame gave values closer to those reported for standard-reference silicates rocks. The reference silicate rocks in the same decomposition solution were also measured by two different colorimetric methods. Finally, Mn was determined in a profile of Venezuelan laterites by atomic absorption in both flames.

Original languageEnglish
Pages (from-to)313-321
Number of pages9
JournalChemical Geology
Volume29
Issue number1-4
DOIs
StatePublished - 1980
Externally publishedYes

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