PHOTOMETRIC DETERMINATION OF MAGNESIUM IN NATURAL WATERS

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Abstract

Various colormetric methods for determining magnesium in natural waters have been studied, and the methods using 8-oxyquinolin, ammonium molybdate and titan yellow were studied most frequently(1)), following the studies on the interfering ions(2)). Brilliant yellow(3)), l-amino-2-naphthol-6-sulfonic acid(4)) and other new reagents were also used. E. D. T. A. was used, but the determination by using this reagentis not exact. Present reagent already reported by T. Ashizawa(5)), magneson II, is insoluble inwater, soluble in alkali and hardly soluble in ethanol. In the existence of magnesium ion, the color of solution varies from pink-violet (in alkali) and orange (in ethanol) to blue-violet. This variation of color was evaluated photometrically by Shimadzu photoelectric spectrophotometer, and moreover the grades of interference by interfering ions were clarified.

Journal

  • 岡山大学温泉研究所報告

    岡山大学温泉研究所報告 (13), 1-5, 1953-12

    岡山大学温泉研究所

Codes

  • NII Article ID (NAID)
    120002484877
  • NII NACSIS-CAT ID (NCID)
    AN00032853
  • Text Lang
    ENG
  • Article Type
    departmental bulletin paper
  • ISSN
    0369-7142
  • Data Source
    IR 
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