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硝酸钾是黑色火药中的主要成分,其含量的多少对黑色火药的爆炸力有显著的影响。在制造各种烟花和焰火时,需要测定其配料中硝酸钾的含量,以便进行合理配方、控制烟花的爆炸性能。高含量的硝酸钾测定,原采用四苯硼钾沉淀重量法。当不存在硝酸钾以外的钾盐时(如氯酸钾、氯化钾等),它是测定硝酸钾含量的准确方法。试剂硝酸钾中硝酸钾含量的测定是采用该法作为国家标准方法。但该法分析手续较烦,熟练的分析人员进行一次分析需要四小时以上,所用的试剂四苯硼钠价格较贵,不能满足日常快速分析的要求。
Potassium nitrate is the main component of black gunpowder, the amount of which has a significant impact on the explosive power of black gunpowder. In the manufacture of various fireworks and fireworks, the need to determine the content of potassium nitrate in its ingredients in order to be a reasonable formula to control the explosive performance of fireworks. Determination of high levels of potassium nitrate, the original use of potassium tetraphenylborate precipitation gravimetric method. When potassium salts other than potassium nitrate (such as potassium chlorate, potassium chloride, etc.) are absent, it is an accurate method of determining the potassium nitrate content. Reagents Potassium nitrate in potassium nitrate content is the use of the law as a national standard method. However, the analysis of the law more troublesome, skilled analysts need an analysis of more than four hours, the reagents used sodium tetraphenylborate more expensive, can not meet the requirements of routine rapid analysis.