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烟草中的含钾量是评定其质量的一个指标,当钾含量适当时,烟叶的叶面光滑,吸食时具有香味,燃烧性能良好。本文以饱和漆酚冠醚钾离子选择电极作指示电极,用电位法测定卷烟丝中的钾含量。饱和漆酚冠醚钾电极抗钠、铵等干扰离子的能力较强,试样用氯化镁溶液煮沸浸取,即可直接进行测定。方法简便准确,相对标准偏差为2.99%。
The potassium content in tobacco is an index to evaluate its quality. When the potassium content is appropriate, the leaf surface of the tobacco is smooth, fragrant when smoking and the burning performance is good. In this paper, saturated urushi ether crown ether potassium ion selective electrode as the indicator electrode, Potassium content of cigarette in the determination of potential. Saturated urushiol crown ether potassium electrode anti-sodium, ammonium and other ions ability to interfere with the sample with magnesium chloride solution boiling leaching, can be directly measured. The method is simple and accurate, with a relative standard deviation of 2.99%.