文章基本信息

标题：A Laboratory Demonstration for the Estimation of the Percentage of Oxygen in Air
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作者：Fan Yang ; Fan Yang ; Zhen Zhang 等
期刊名称：Journal of Laboratory Chemical Education
印刷版ISSN：2331-7450
电子版ISSN：2331-7469
出版年度：2017
卷号：5
期号：5
页码：116-119
DOI：10.5923/j.jlce.20170505.03
语种：English
出版社：Scientific & Academic Publishing
摘要：This paper discussed a method to improve the estimation of the oxygen content in the atmosphere. An indicating solution containing methylene blue (MB), glucose and other chemicals was used to detect unreacted oxygen in residue gas after the combustion of white phosphorous. The optimized MB-glucose solution verified that the amount of remaining oxygen after combustion was significant. The amount of unreacted oxygen was accurately measured by polarography and gas chromatography. Subsequently, the corrected value of the oxygen content from this experiment was obtained by adding the amount of unreacted oxygen. Results showed that the adjusted value was close to the theoretical value.
关键词：White phosphorus; Air; Oxygen; Methylene blue; Polarography; Gas chromatography