| 5—Br—PADAP分光光度法测定多金属结核中的铌 |
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| 引用本文： | 夏月莲, 毛海燕. 5—Br—PADAP分光光度法测定多金属结核中的铌[J]. 岩矿测试, 1997, (3): 180-182. |
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| 作者姓名： | 夏月莲 毛海燕 |
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| 作者单位： | 地矿部岩矿测试技术研究所 |
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| 基金项目： | 中国大洋矿产资源研究与开发协会八五综合课题 |
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| 摘 要： | 报道了用单宁＿硅酸钠＿动物胶沉淀分离多金属结核中的Ｍｎ、Ｃｏ、Ｆｅ、Ｓｉ等干扰组分，然后用５＿Ｂｒ＿ＰＡＤＡＰ分光光度法在水相中测定Ｎｂ；讨论和解决了Ｎｂ的结果偏低问题。方法应用于新研制的大洋多金属结核ＧＳＰＮ＿２和ＧＳＰＮ＿３中Ｎｂ的定值测定，结果与初定值相符，其ＲＳＤ（ｎ＝７）分别为２０１％和３２２％。
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| 关 键 词： | 铌 多金属结核 分离富集 标准物质 |
Determination of Niobium in Polymetallic Nodules by 5_Br_PADAP Spectrophotometry |
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| Determination of Niobium in Polymetallic Nodules by 5_Br_PADAP Spectrophotometry[J]. Rock and Mineral Analysis, 1997, (3): 180-182. |
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| Authors: | Xia Yuelian Mao Haiyan |
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| Abstract: | Determination of Nb in polymetallic nodules by 5_Br_PADAP spectrophotometry is reported in this paper. The interference components of Fe, Mn and Si in the samples are separated by precipitation with tannin_sodium silica_animal gel. The factors which lead to lower results are discussed. The method has been applied to the determination of Nb in polymetallic nodules of GSPN_2 and GSPN_3. The results of Nb are in good agreement with certified values with precision of 2.01% RSD n =7 and 3.22% RSD n =7 respectively for the two samples. |
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