| 取代三联吡啶光度法测定铬(Ⅵ) |
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| 引用本文： | 陈文涛,行文茹,杨浩,柳文敏,王西新,孟召辉.取代三联吡啶光度法测定铬(Ⅵ)[J].南都学坛,2000,20(3):49-51. |
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| 作者姓名： | 陈文涛 行文茹 杨浩 柳文敏 王西新 孟召辉 |
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| 作者单位： | 南阳师专,化学系,河南,南阳,473061 |
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| 基金项目： | 1998年河南省教委自然科学基础研究项目(98150030) |
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| 摘 要： | 研究了 6 ,6″—二甲基— 4′—苯基 - 2 ,2′ :6′ ,2″—三联吡啶 (TPY)与Cr(Ⅵ )的显色反应。在pH5 .0 6 .2的HAc -NaAc介质中 ,Cr(Ⅵ )与该试剂形成稳定的橙色络合物 ,其吸收峰波长λmax=36 7nm ,表观摩尔吸光系数为 1.72× 10 5L(mol·cm) -1,Cr(Ⅵ )浓度在 1.3～ 76 μg/L内服从比尔定律。精密度和准确度实验结果表明 ,该方法准确 ,可用于环境水及电镀水中铬 (Ⅵ )的测定
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| 关 键 词： | 6′ 2″三联吡啶 Cr(Ⅵ) 分光光度法 |
| 文章编号： | 1002-6320(2000)03-0049-03 |
| 修稿时间： | 1999年10月28 |
Spectrophotometric Determination of Chromium(Ⅵ) with Substituted Terpyridine |
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| Chen Wentao,Xing Wenru,Yang Hao,Liu Wenmin,Wang Xixin,Meng Zhaohui.Spectrophotometric Determination of Chromium(Ⅵ) with Substituted Terpyridine[J].Academic forum of nandu,2000,20(3):49-51. |
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| Authors: | Chen Wentao Xing Wenru Yang Hao Liu Wenmin Wang Xixin Meng Zhaohui |
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| Abstract: | A colour reaction of Cr(Ⅵ) with 6,6″ dismethyl 4′ phenyl 2,2′:6′,2″ terpyridine(TPY) was studied by spectrophotometry.In a range of pH5.0～6.2,Cr(Ⅵ) can react with TPY to form a orange product in HAc-NaAc medium.Maximum absorbance is at 367 nm with molar absorptivity of 1.72×10 5L·(mol·cm) -1 .Beer’s law is obeyed in the range of 1.3～76 μg Cr(Ⅵ)/L.Precision and accuracy experiments showed that the method was accurate and suitable for determination of chromium(Ⅵ) in natural and electroplating wastewater. |
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| Keywords: | dismethy1 4′ pheny1 2 2′:6′ 2″ terpyridine chromium(Ⅵ) spectrophotometry |
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