| 铑-钨酸盐-番红花T缔合显色反应的研究及应用 |
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| 引用本文： | 赵霞,周俊,白莹,李珍贵.铑-钨酸盐-番红花T缔合显色反应的研究及应用[J].大理学院学报,2009,8(4). |
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| 作者姓名： | 赵霞 周俊 白莹 李珍贵 |
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| 作者单位： | 1. 大理学院生命科学与化学学院,云南大理,671000
2. 昆明学院小学教育系,云南昆明,650202 |
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| 基金项目： | 云南省教育厅科研立项基金 |
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| 摘 要： | 在聚乙烯醇(PVA)存在下,铑(Ⅲ)与钨酸盐及番红花T(ST)形成的离子缔合物在480nm处产生最大吸收.据此建立了测定铑(Ⅲ)的光度分析方法,其表观摩尔吸光系数ε达108L·mol-1·cm-1数量级.方法的检测范围为0.15～1.5 ng/25ml.大量存在的常见离子对Rh(Ⅲ)的测定不干扰.用此方法测定了催化剂及工业产品中铑的含量,结果与标准方法(SnCl2法)一致.
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| 关 键 词： | 铑 番红花T(ST) 钨酸盐 光度法 |
Study on Color Reaction of Ion-associated Complex of Rhodium- tungstate Cotton Red T and Its Application |
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| Zhao Xia,Zhou Jun,Bai Ying,Li Zhengui.Study on Color Reaction of Ion-associated Complex of Rhodium- tungstate Cotton Red T and Its Application[J].Journal of Dali University,2009,8(4). |
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| Authors: | Zhao Xia Zhou Jun Bai Ying Li Zhengui |
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| Institution: | 1.College of Life Science and Chemistry;Dali University;Dali;Yunnan 671000;China;2.Department of Primary Education;Kunming College;Kunming;Yunnan 650202;China |
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| Abstract: | The ion-associated complex formed by rhodium,tungstate and Cotton Red T(ST)in the presence of polyvinyl alcohol(PVA)has a maximum absorbance at 480 nm.A sensitive method for determination of Rh(III)was developed based on this reaction.Its apparent molar absorptivity is more than 108 L.moL-1.cm-1 with a linear range of 0.15-1.5 ng/25ml Rh(III).Other ions in samples did not interfere the determination of rhodium.The results for determination of rhodium in real samples obtained by this method were consistent w... |
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| Keywords: | rhodium cotton red T tungstate spectrophotometry |
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