四苯硼钠—季铵盐质量滴定法分析钾含量研究

Mass Titration to Analyze Potassium Content by Sodium Tetraphen- ylboron and Hexadecyl Trimethyl Ammonium Bromide

中文关键词:  钾离子  质量滴定法  松节油  共存离子

英文关键词::Mass titration  Turpentine oil  Coexisted ions

中文摘要:

      依据四苯硼钠—季铵盐容量法滴定K⁺离子的原理,采用质量滴定法,考察了滴定速度、松节油加入量对四苯硼钠与季铵盐反应的影响及共存离子(包括Li⁺、Mg²⁺、Ca²⁺、SO2-₄、B₄O2-₇、CO2-₃)对K⁺含量测定结果的影响。当测定K⁺离子含量在5～15 mg范围内,松节油最佳加入量为25滴,分析误差< 0.3%。

英文摘要:

      :According to the principle of sodium tetraphenylborate-ammonium ions volumetry, the effects of the titration speed, the terebinthine quantity addition and the coexist ions including Li⁺, Mg²⁺, Ca²⁺, SO2-₄, B₄O2-₇, and CO2-₃ were studied by mass titration method. The experiment results confirmed that when the content of potassium is between 5 mg and 15 mg, the best addition of turpentine oil is 25 drops and the analytical error is less than 0.3%.