The Study of Analytical Chemistry of the Modification of Manganese Dioxide (Report Two). Quantitative Determination of ${\gamma}$-Manganese Dioxide by Differential Heating Curves

變態二酸化 망간의 分析化學的 硏究 (第二報). 示差熱曲線에 依한 ${\gamma}-MnO_2$의 定量法

  • Published : 1971.10.30

Abstract

Endothermic peak of transformation of ${\gamma}-MnO_2$ was obviously shown by differential heating curve in the present study, and the transformation temperature was different from other modification. ${\gamma}-MnO_2$ carried out to analyze exclusively, by means of the half area method in corresponding endothermic peak of differential heating curve. ${\alpha}-\;and\;{$beta}-MnO_2$ (Pyrolusite) containing in sample about 75% is interfered about ${\pm}$10% of the relative error, and while those of below 50% is interfered about ${\pm}$5%.

Keywords

References

  1. The study of analytical chemistry of the modification of manganese dioxide Reprot one C. H. Kim
  2. X-Ray diffraction index card 14-644 A. S. T. M.
  3. J. I. S.-K-8705
  4. Thermal methods of analysis Wesley W. M. Wendlandt
  5. Anal. Chem. v.21 M. J. Vold
  6. J. Am. Ceram. Soc. v.22 no.54 Norton, F. H.
  7. Japan Anal. Chem. v.1041 Katsuya Sato;SusumuYamazaki;Kozo Senju
  8. Trans. Brit. Ceram. Soc. v.44 Grimashaw, R. W.;E. Heaton;A. L. Roberts