| 3,5-Br_2-PADAP分光光度计测定钢铁中微量铌 |
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| 引用本文： | 徐汾兰,徐炎.3,5-Br_2-PADAP分光光度计测定钢铁中微量铌[J].安徽工业大学学报,1998(4). |
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| 作者姓名： | 徐汾兰 徐炎 |
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| 作者单位： | 马钢钢研所化学室!243000 |
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| 摘 要： | 目前氯磺酚S光度法是测定钢铁及合金中铌量较好的方法，但3，5－Br2－PADAP在钢中测定微量铌的应用国内尚未见报道．研究发现3，5－Br2－PADM－铌在一定酸度条件下，生成稳定的三元络合物．其方法选择性好，精度高，己应用于生产中．
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| 关 键 词： | 铌 分光光度法 3，5－Br－PADAP |
Spectrophotometric Determintion of Niobium in Iron and Steel with 3,5 -Br_2 -PADAP |
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| Xu Fenglan ,Xu Yan.Spectrophotometric Determintion of Niobium in Iron and Steel with 3,5 -Br_2 -PADAP[J].Journal of Anhui University of Technology,1998(4). |
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| Authors: | Xu Fenglan Xu Yan |
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| Abstract: | Chorosulfophenol-S spectrophotometric determination of niobium in iron and steel is a good method. Only in the rang of 0.010% ~ 0.500% niobium can be determined accurately, and the niobium (about < 0.010%) can't be determined. The results show that 3, 5 - Br2- PADAP -niobium-tartaric acid forms a stable ternary complex under given conditions. This method hasn't been published in our country but is highly accurate. It is used for determination of niobium in iron and steel satisfactorily. |
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| Keywords: | Niobium Spectrophotometric 3 5-2-brom-pyidylazo |
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