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Concurrent determination of magnesium and calcium in iron ores by atomic absorption spectroscopy

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Summary

Examinations were made for the concurrent determination of magnesium and calcium in iron ores when present in about equal amounts, using the magnesium-calcium coupled type hollow-cathode lamp in atomic absorption spectroscopy, and a method of measurement was established. Concurrent determination was found to be easily possible by removal of the majority of iron by extraction with methyl isobutyl ketone and addition of strontium. Analytical precision was calculated and found to give satisfactory results (standard deviations: ±0.004% for Ca, ±0.006% for Mg).

Zusammenfassung

Untersuchungen wurden angestellt über die Bestimmung von Magnesium und Calcium nebeneinander in ungefähr gleichen Mengen in Eisenerzen durch Atomabsorptionsspektrometrie. Verwendet wird die Ca-Mg-Doppel-Hohlkathodenlampe. Die Hauptmenge des Eisens wird durch Extraktion mit Methylisobutylketon zuvor entfernt. Außerdem ist zur Vermeidung einer Störung ein Zusatz von Strontium erforderlich. Es werden zufriedenstellende Ergebnisse erhalten (Standardabweichung: ±0,004% für Ca, ±0,006% für Mg).

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References

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Authors and Affiliations

  1. The Research Institute for Iron, Steel and other Metals Tôhoku University, Sendai, Japan

    Hidehiro Gotô, Ikuo Atsuya & Tsutomu Shoji

Authors
  1. Hidehiro Gotô
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  2. Ikuo Atsuya
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  3. Tsutomu Shoji
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Gotô, H., Atsuya, I. & Shoji, T. Concurrent determination of magnesium and calcium in iron ores by atomic absorption spectroscopy. Z. Anal. Chem. 234, 333–339 (1968). https://doi.org/10.1007/BF00521441

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  • DOI: https://doi.org/10.1007/BF00521441

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