| 钒磷钼黄分光光度法快速测定磷酸二氢钾的纯度 |
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| 引用本文： | 李兴利. 钒磷钼黄分光光度法快速测定磷酸二氢钾的纯度[J]. 化学分析计量, 2007, 16(1): 46-47 |
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| 作者姓名： | 李兴利 |
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| 作者单位： | 武陟县质量技术监督检验测试中心,焦作,454900 |
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| 摘 要： | 在酸性溶液中磷酸根与钒钼酸铵作用,不受F-、CO32-、SO42-、NO3-、Cl-和NH4 的干扰,生成稳定的黄色配合物,在420nm波长处进行比色,根据磷的量求出磷酸二氢钾的含量,测量结果的相对标准偏差为0.052%。该方法的测定结果与磷钼酸喹啉重量法测定结果基本一致。
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| 关 键 词： | 分光光度法 磷酸二氢钾 钒钼酸铵 测定 |
| 修稿时间： | 2006-10-29 |
FAST DETERMINATION OF POTASSIUM DIHYDROGENPHOSPHATE CONTENT IN POTASSIUM DIHYDROGENPHOSPHATE BY SPECTROPHOTOMETRY |
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| Li Xingli. FAST DETERMINATION OF POTASSIUM DIHYDROGENPHOSPHATE CONTENT IN POTASSIUM DIHYDROGENPHOSPHATE BY SPECTROPHOTOMETRY[J]. Chemical Analysis And Meterage, 2007, 16(1): 46-47 |
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| Authors: | Li Xingli |
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| Abstract: | In acid solution, being free from F-,CO32-,SO42-,NO3-,Cl- and NH4- interference, phosphorus reacted with vanadium ammonium molybdate to form stable yellow complexes. The phosphorus content in ferrosilicon ore was determined by spectrometry at 420 nm. Phosphorus content was used to solve for potassium dihydrogen phosphate content, the relative standard deviation was 0.052%. The result correspond with that by the phosphorus molybdic acid quinoline weight method. |
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| Keywords: | spectrophotometric method potassium dihydrogen phosphate vanadium ammonium molybdate determination |
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