| 等色染料离子对浮选光度法测定铂 |
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| 引用本文： | 刘保生,陈彩萍.等色染料离子对浮选光度法测定铂[J].光谱学与光谱分析,1998,18(4):492-495. |
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| 作者姓名： | 刘保生 陈彩萍 |
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| 作者单位： | 河北大学理化分析中心 |
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| 摘 要： | 提出了等色染料离子对浮选光度法、向罗丹明６Ｇ（Ｒ６Ｇ）和Ｐｔ（ＳｎＣｌ３）５＾３－的异丙醚浮选物Ｐｔ（ＳｎＣｌ３（５（Ｒ６Ｇ）３中，加入ＰＨ＝５．５的醋酸－醋酸铵缓冲溶液，使Ｒ６Ｇ离子进入水相，并向其中加入与Ｒ６Ｇ颜色相同的四溴荧光素（ＴＢＦ）〉形成等色染料等离子对Ｒ６Ｇ，ＴＢＦ，再被甲茉浮选，将浮选物溶于丙酮，于５３０ｎｍ处进行光度测定，由于６个染料分子（Ｐｔ：Ｒ６Ｇ：ＴＢＦ）＝（１：３：３）ｅ
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| 关 键 词： | 铂 四溴荧光素 罗丹明6G 浮选光度法 测定 |
FLOTATION SPECTROPHOTOMETRIC DETERMINATION OF PLATINUM ON ISOCHROMATIC DYE ION PAIR WITH TETRABROMOFLUORESCEIN AND RHODAMINE 6G |
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| B Liu,C Chen,B Zuo.FLOTATION SPECTROPHOTOMETRIC DETERMINATION OF PLATINUM ON ISOCHROMATIC DYE ION PAIR WITH TETRABROMOFLUORESCEIN AND RHODAMINE 6G[J].Spectroscopy and Spectral Analysis,1998,18(4):492-495. |
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| Authors: | B Liu C Chen B Zuo |
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| Institution: | Research Centre of Physical and Chemical Analysis, Hebei University, 071002 Baoding. |
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| Abstract: | The flotation spectrophotometric method for the determination of platinum with isochromatic dye ion-pair is described. Rhodamine 6G (R6G) was produced and entered into aqueous phase when pH = 5.5 buffer solution was added to the Pt (SnCl3)5 (R6G)3 by isopropyl ether flotation. And then R6G. TBF was floated by tetrabromofluorescein(TBF)with toluene. The floatation was dissolved in acetone and absorbance of the solution was measured at 530nm. The sensitivity was raised because of the six dyes (Pt : R6G : TBF = 1 : 3 : 3) assistant effect. The molar absorptivity of this method is 5.92 x 10(5)L x mol(-1) x cm(-1). Beer's law was obeyed in the range of 0-2 microg/10mL with a relative standard deviation of 3.8%. The method was applied satisfactorily to the determination of platinum contained in catalysts without separation. |
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| Keywords: | Platinum Tetrabromofluorescein Rhodamine 6G Flotation spectrophotometry |
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