摘要
研究了在聚乙烯醇介质中 ,利用钾离子与四苯硼钠形成稳定的胶体沉淀可测定钾含量 ,钾量在 0～ 1 .0 mg/ 2 5m L范围内符合比耳定律。方法可用于烟草制品中钾含量的测定 。
In the polyvinyl alcohol (PVA) medium, potassium can react with sodium tetraphenylboron to form a stable colloidal precipitation.Beer's law is obeyed in the range 0~1.0 mg/25 mL. The proposed method has been applied to the determination of potassium in tobacco, and the result obtained is in good agreement with the gravimetric method.
出处
《分析科学学报》
CAS
CSCD
北大核心
2001年第1期60-61,共2页
Journal of Analytical Science
