| 磷钼蓝光度法快速测定普碳钢及低合金钢中磷的改进 |
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| 引用本文： | 王际祥. 磷钼蓝光度法快速测定普碳钢及低合金钢中磷的改进[J]. 冶金标准化与质量, 2007, 45(1): 9-10 |
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| 作者姓名： | 王际祥 |
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| 作者单位： | 莱芜钢铁集团有限公司技术研发中心,山东,莱芜,271104 |
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| 摘 要： | 试样以稀硝酸溶解后,用高锰酸钾氧化磷为磷酸,然后加入钼酸铵-酒石酸钾钠溶液与磷酸生成磷钼酸络离子,在氟化钠存在下,氯化亚锡溶液将其还原为磷钼蓝后,迅速加入氢氧化钠溶液降低酸度,以提高磷钼蓝色泽的稳定性,取得了较好的效果。
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| 关 键 词： | 稀硝酸 高锰酸钾 氧化磷 磷钼蓝光度法 降低酸度 |
| 文章编号： | 1003-0514(2007)01-0009-02 |
| 修稿时间： | 2007-01-18 |
Rapid determination of phosphorus content in carbon steel and low - alloy steel with P - Mo Blue photometric method |
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| WANG Ji-xiang. Rapid determination of phosphorus content in carbon steel and low - alloy steel with P - Mo Blue photometric method[J]. Metallurgical Standardization & Quality, 2007, 45(1): 9-10 |
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| Authors: | WANG Ji-xiang |
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| Abstract: | After the sample is dissolved in dilute HNO3,oxidize phoporus to H3PO4 with KMnO4,and add in(NH4)6Mo7O(24)-C4H4KnaO6 solution to from P-Mo acid ion.With the existence of NaF,SnCl2 solution restores it to P-Mo blue.At this time,add in NaOH solution to reduce acidity and improve the complex's stabilization.The effect is proved to be good. |
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| Keywords: | dilute HNO3 KMnO4 oxidizing phoporus P-Mo Blue photometric method reducing acidity |
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