| 混合胶束对钛—溴邻苯三酚红显色体系的增敏作用 |
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| 引用本文： | 罗宗铭,梁亮.混合胶束对钛—溴邻苯三酚红显色体系的增敏作用[J].岩矿测试,1999,20(2):157-159. |
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| 作者姓名： | 罗宗铭 梁亮 |
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| 作者单位： | 广东工业大学化工系,广州,510090 |
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| 基金项目： | 广东省高教厅重点学科资助 |
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| 摘 要： | 在５．０×１０－３ｍｏｌ／ＬＨ２ＳＯ４介质中，溴化十六烷基吡啶（ＣＰＢ）和ＯＰ存在下，Ｔｉ（Ⅳ）与溴邻苯三酚红（ＢＰＲ）形成红紫色络合物。该络合物的λｍａｘ＝６３８ｎｍ，ε为５．８１×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，钛的质量浓度为０～０．３２ｍｇ／Ｌ时符合比尔定律。拟定的方法用于硅酸盐岩石中微量钛的测定，结果与原结果相符，ＲＳＤ（ｎ＝６）＜１．５０％。
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| 关 键 词： | 钛 溴铃苯三酚红 硅酸盐岩石 胶束增敏 显色体系 |
| 修稿时间： | 1998-07-02 |
Sensitization of Mixed Micelle for Titanium-Bromopyrogallol Red |
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| LUO Zong-ming,LIANG Liang,ZHONG Dong-hu,PENG Jin-ping.Sensitization of Mixed Micelle for Titanium-Bromopyrogallol Red[J].Rock and Mineral Analysis,1999,20(2):157-159. |
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| Authors: | LUO Zong-ming LIANG Liang ZHONG Dong-hu PENG Jin-ping |
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| Abstract: | In 5.010-3 mol/L H2SO4 medium and in the presence of cetylpyridine bromide and OP, titanium () reacts with bromopyrogallol red to form a purpureal complex. The complex exhibits maximum absorption at 638 nm with the apparent molar absorptivity of 5.81104 Lmol-1cm-1. Beers law is obeyed in the range of 00.32 mg/L for Ti. The proposed method has been applied to the spectrophotometric determination of trace titanium in silicate rocks. The results are in good agreement with recommended values with precision of <1.5% RSD (n=6).\=\= |
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| Keywords: | titanium bromopyrogallol red silicate rock spectrophotometry sensitization of micelle\=\=\= |
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