| 五氧化二磷测定方法的比较 |
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| 引用本文： | 段平,李华. 五氧化二磷测定方法的比较[J]. 磷肥与复肥, 2000, 15(5): 60-61 |
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| 作者姓名： | 段平 李华 |
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| 作者单位： | 郑州工业大学化工学院,河南,郑州,450002 |
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| 摘 要： | 通过对磷钼酸喹啉重量法、磷钒钼黄比色法、磷钒钼黄改进比色法、螯溶-差示光度法4种测定P2O5含量方法的对比分析,研究几种比色测定方法的可靠性和准确性.实验结果表明以酸溶-重量法实验结果为基准,当分析样品单一且其P2O5含量较低时,可选用磷钒钼黄比色法;如分析样品含磷量变化大,应采用改进磷钒钼黄比色法;如测定高品位磷矿中的磷含量,可用螯溶-差示光度法.
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| 关 键 词： | 五氧化二磷 测定方法 比较 |
| 文章编号： | 1007-6220(2000)05-0060-02 |
| 修稿时间： | 1999-11-29 |
Comparison of various analytical methods for determination of P2O5 |
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| DUAN Ping,LI Hua. Comparison of various analytical methods for determination of P2O5[J]. Phosphate & Compound Fertilizer, 2000, 15(5): 60-61 |
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| Authors: | DUAN Ping LI Hua |
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| Abstract: | By comparison of phosphomolybdicquinoline gravimetric method, phosphovanadicmolybdic colorimetric method, improved phosphovanadicmolybdic colorimetric method and chelateddifferential photometric method on the analysis of P-2O-5, the reliability and accuracy of these photocolorimetric methods are discussed. Research shows that the phosphovanadicmolybdic colorimetric method is availiable for a low P-2O-5 content in a single sample; the improved phosphovanadicmolybdic colorimetric method is applicable for a large range of P content; and the chelateddifferential photometric method is ideal to high grade phosphate rocks. |
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| Keywords: | analytical method comparison phosphorus |
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