| Tb（Ⅲ）—ARS—CTMAB络合物的极谱吸附波研究 |
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| 引用本文： | 许世学,谢笑天,字敏,肖怡琳.Tb（Ⅲ）—ARS—CTMAB络合物的极谱吸附波研究[J].理化检验(化学分册),2001,37(1):34-36. |
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| 作者姓名： | 许世学 谢笑天 字敏 肖怡琳 |
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| 作者单位： | 云南师范大学化学系, |
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| 摘 要： | 研究了在 p H9.4的氨 -氯化铵缓冲溶液中 ,Tb( )与茜素红 (ARS)、溴化十六烷基三甲铵 (CTMAB)三元络合物的极谱波 ,该极谱波峰电位在 - 0 .74V(vs.SCE) ,峰高与铽的浓度在6.0× 1 0 -8～ 8.0× 1 0 -6mol· L-1之间呈线性关系 ,检出限为 4.0× 1 0 -8mol· L-1,结合萃取柱色谱分离方法测定了稀土矿石中的重稀土元素铽。
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| 关 键 词： | 极谱吸附波 三元络合物 铽 矿石 茜素红 溴化十六烷基三甲铵 微量分析 极谱法 |
| 文章编号： | 1001-4020(2001)01-0034-03 |
| 修稿时间： | 1999年9月8日 |
STUDY OF POLAROGRAPHIC
ADSORPTIVE WAVE OF Tb ( |
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| XU Shi-xue,XIE Xiao-tian,ZI Ming,XIAO Yi-ling.STUDY OF POLAROGRAPHIC
ADSORPTIVE WAVE OF Tb ([J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2001,37(1):34-36. |
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| Authors: | XU Shi-xue XIE Xiao-tian ZI Ming XIAO Yi-ling |
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| Abstract: | In an NH3-NH4C1 buffer solution of pH 9.4, terbium(Ⅱ) reacts with alizarin red (ARS) and
cetyltrimethylammniu bromide (CTMAB) to form a ternary complex which produces a polarographic wave at
-0.74V(vs. SCE). A linear relationship between the peak current, ip and concentration of terbium(Ⅲ) is found in
the range of 6.0×10-8～8.0×10-6mol·L-1. The detection limit is 4.0×10-8mol·L-1. After the separation by
precipitation and reverse chromatography the method has been successfully applied to determine the heavy rare
earth element, terbium, in ores with satisfactory results. |
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| Keywords: | Polarographic adsorptive wave Ternary complex Terbium Ores |
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