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四苯硼钠—季铵盐容量法快速测钾 |
Rapid Determination of Potassium Content by Sodium Tetraphenylboron-quaternary Ammonium Salt Volumetric Method |
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DOI: |
中文关键词: 四苯硼钠 季铵盐 容量法 钾测定 达旦黄 松节油 |
英文关键词:Sodium tetraphenylborate Quaternary ammonium salt Volumetric method Determination of potassium content Titan yellow Turpentine |
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中文摘要: |
用四苯硼钠—季铵盐容量法间接测定钾,并与四苯硼钠重量法进行比较。测定1%以上的钾含量时,相对误差〈l%,平均回收率为99.52%,标准偏差分别为0.0082、0.0073,变异系数分别为0.82%、0.33%(RSD,n=7)。该方法操作简便、快速、准确,适用于含钾产品的中间控制分析及钾盐、卤水、盐化工产品、钾肥中钾的快速测定。 |
英文摘要: |
The paper determinates the sample potassium content by sodium tetraphenylboron-quaternary ammonium salt volumetric method, and compares this method with sodium tetraphenylborate gravimetrie method. The relative error of determination of potassium content is less than 1% when potassium content is more than 1%. Experimental results show that average recovery is 99. 52%, standard deviations are 0. 008 2 and 0. 007 3 ,respectively, and coefficients of variation are 0. 82% and 0. 33% ( RSD,n =7), respectively. This simple, rapid and accurate method can be applied to the middle control analysis of potassium product and rapid determination of potassium content in potassium salt, brine, chemical salt prod- uet and potassium fertilizer. |
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