| 铑-钨酸盐-丁基罗丹明B体系光度法测定痕量铑的研究 |
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| 引用本文： | 苗兆涛,张婷,张英,丁中涛,曹秋娥. 铑-钨酸盐-丁基罗丹明B体系光度法测定痕量铑的研究[J]. 云南化工, 2012, 0(1): 36-38 |
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| 作者姓名： | 苗兆涛 张婷 张英 丁中涛 曹秋娥 |
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| 作者单位： | 教育部自然资源药物化学重点实验室,云南大学化学科学与工程学院,云南昆明650091 |
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| 基金项目： | 基金项目：国家自然科学基金（20965009）;云南省自然科学基金（2009CD008）. |
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| 摘 要： | 以Rh（Ⅲ）、钨酸盐及丁基罗丹明B在6．0mol／L硫酸介质和聚乙烯醇（PVA）存在下形成离子缔合物的反应为基础，建立了一个测定Rh（Ⅲ）的光度分析新方法。在优化条件下，体系在589nm处的吸光度与Rh（Ⅲ）的质量浓度在1．2～20．0ng／mL范围内具有良好的线性关系，摩尔吸光系数为5．70×10^6L·mol^-1·cm^-1。方法具有较好的选择性，用于测定催化剂及冶金产品中铑的含量，得到的结果与用标准方法（SnCl2法）测得的结果基本一致。
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| 关 键 词： | 铑 丁基罗丹明B 光度法 |
Study on the Spectrophotometric Method for the Determination of Rhodium with Rhodium-Tungstate-Butyl rhodamine B System |
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| MIAO Zhao-tao,ZHANG Ting,ZHANG Ying,DING Zhong-tao,CAO Qiu-e. Study on the Spectrophotometric Method for the Determination of Rhodium with Rhodium-Tungstate-Butyl rhodamine B System[J]. Yunnan Chemical Technology, 2012, 0(1): 36-38 |
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| Authors: | MIAO Zhao-tao ZHANG Ting ZHANG Ying DING Zhong-tao CAO Qiu-e |
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| Affiliation: | ( Key Laboratory of Medicinal Chemistry for Nature Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091 ) |
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| Abstract: | A new spectrophotometric method for the determination of Rh （Ⅲ） was developed based on the ion-associated reaction among rhodium （ Ⅲ）, tungstate and butyl rhodamine B in the presence of poly （vinyl alcohol） （PVA） and in 6.0 mol/L H2SO4 medium. The good linear relationship between the absor- bance at 589nm and the concentration of Rh（ Ⅲ ） in the range of 1.2 - 20.0 ng/mL was obtained with the apparent molar absorptivity of 5.70 ×10^6L·mol^-1·cm^-1 The method possesses good selectivity and could be used for the determination of rhodium in the catalyst and metallurgical product. The results obtained by this method were consistent well with those obtained by SnCl2 method. |
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| Keywords: | Rhodium Butyl rhodamine B Spectrophotometry |
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