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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 17, Number 2
JKCSEZ 17(2)
April 20, 1973 

The Study of Analytical Chemistry of the Modification of Manganese Dioxide (Ⅲ). Quntitative Determination of Pyrolusite by Differential Heating Curves

변태 이산화망간의 분석 화학적 연구 (제3보) 시차 열곡선에 의한 Pyrolusite의 정량
Chan-Ho Kim

시차열곡선에서 Pyrolusite(β-MnO2)의 결정 전이의 흡열 Peak를 이용하여 분석 화학적인 재현성을 검토한 결과 Pyrolusite의 량이 50mg∼450mg까지는 정량적이었다. α-MnO2는 흡열 Peak가 중첩되어 파의 분리가 불가능하였으며, γ-MnO2(전해이산화망간)와 δ-MnO2는 오차 범위 ±5%∼±10%이내에서 조제시료중 Pyrolusite만을 정량할 수 있다.

A study on the endothermic peak of transformation of the pyrolusite was made by using differential thermal curves for analytical reproducibility, and it was done in quantity on range from 50 mg to 450 mg of pyrolusite species. The separation of α-MnO2 peak was impossible due to the overlapping between α and pyrolusite peaks, and the pyrolusite was determined among the species, γ-MnO2 and δ-MnO2, with an error ranging from 5 % to 10 %.

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