| 分光光度法快速测定复合肥中有效磷含量 |
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| 引用本文： | 张辰. 分光光度法快速测定复合肥中有效磷含量[J]. 化肥工业, 2008, 35(1): 66-68 |
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| 作者姓名： | 张辰 |
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| 作者单位： | 辽宁营口市产品质量监督检验所,115000 |
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| 摘 要： | 研究了分光光度法快速测定复合肥中有效磷含量的方法,对测定过程的波长、酸度、显色剂用量、显色时间、不同提取时间进行了探讨。在酸性溶液中,磷酸根与钒钼酸铵显色剂反应生成稳定的黄色络合物,在400 nm波长处进行测定,测定结果的相对标准偏差为0.17%~0.40%,回收率为95.30%~107.94%。
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| 关 键 词： | 复合肥 有效磷 分光光度法 测定 |
| 收稿时间： | 2007-04-18 |
| 修稿时间： | 2007-04-18 |
Rapid Determination of Available Phosphate Content in Compound Fertilizers by Spectrophotometry |
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| Zhang Chen. Rapid Determination of Available Phosphate Content in Compound Fertilizers by Spectrophotometry[J]. Journal of the Chemical Fertilizer Industry, 2008, 35(1): 66-68 |
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| Authors: | Zhang Chen |
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| Affiliation: | Yingkou Institute of Supervision and Testing on Product Quality of Liaoning Province 115000 |
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| Abstract: | The method is studied of the rapid determination of available phosphate content in compound fertilizers by spectrophotometry,and an inquiry is made into the wave length,acidity,quantity of developer used,developing time and different extraction time during determination.In the acidic solution,the phosphate radical reacts with the ammonium vanado-molybdate developer to form a stable yellow complex,which is determined at a wavelength of 400 nm,the relative standard deviation of the result of determination is 0.17%~0.40%,and the recovery is 95.30%~107.94%. |
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| Keywords: | compound fertilizers available phosphate spectrophotometry determination |
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