| 四苯硼钠—季铵盐容量法快速测钾 |
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| 引用本文： | 冉广芬,马海州,孟瑞英,陈育刚.四苯硼钠—季铵盐容量法快速测钾[J].盐湖研究,2009,17(2):39-42. |
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| 作者姓名： | 冉广芬 马海州 孟瑞英 陈育刚 |
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| 作者单位： | 中国科学院青海盐湖研究所,青海,西宁,810008 |
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| 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<1%,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。
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| 关 键 词： | 四苯硼钠 季铵盐 容量法 钾测定 达旦黄 松节油 |
Rapid Determination of Potassium Content by Sodium Tetraphenylboron-quaternary Ammonium Salt Volumetric Method |
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| RAN Guang-fen,MA Hai-zhou,MENG Rui-ying,CHEN Yu-gang.Rapid Determination of Potassium Content by Sodium Tetraphenylboron-quaternary Ammonium Salt Volumetric Method[J].Journal of Salt Lake Research,2009,17(2):39-42. |
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| Authors: | RAN Guang-fen MA Hai-zhou MENG Rui-ying CHEN Yu-gang |
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| Institution: | (Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining ,810008, China) |
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| Abstract: | 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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| Keywords: | Sodium tetraphenylborate Quaternary ammonium salt Volumetric method Determination of potassium content Titan yellow Turpentine |
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