| 2-(2-喹啉偶氮)-1,3-二羟基苯吸光光度法测定钒的研究 |
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| 引用本文： | 饶敏,孙海林,杨春梅,乔永峰,董学畅,胡秋芬,杨光宇. 2-(2-喹啉偶氮)-1,3-二羟基苯吸光光度法测定钒的研究[J]. 云南化工, 2003, 30(6): 37-39 |
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| 作者姓名： | 饶敏 孙海林 杨春梅 乔永峰 董学畅 胡秋芬 杨光宇 |
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| 作者单位： | 云南民族大学化学与生物技术学院,昆明,650031 |
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| 摘 要： | 研究了新显色剂2 (2 喹啉偶氮) 1,3 二羟基苯(QADHB)在阳离子表面活性剂十六烷基三甲基溴化铵(CTMAB)存在下,与钒(V)的显色反应条件。试验结果表明,在pH3.5的柠檬酸 氢氧化钠缓冲介质中,该显色剂可与钒(V)形成生成2∶1稳定配合物。在550nm波长处配合物的表观摩尔吸光系数ε=7.79×104L·mol-1·cm-1,钒含量在0～15μg/25mL内符合比尔定律。该法用于几种合金样品中钒的分析,结果令人满意。
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| 关 键 词： | 2-(2-喹啉偶氮)-1,3-二羟基苯 钒 分光光度测定法 |
| 文章编号： | 1004-275X(2003)06-0037-03 |
Spectrophotometric Determination of Vanadium in Alloy with 2-(2-Quinolinylazo)-1,3-Dihydroxybenzene |
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| RAO min,SHUN Hai-lin,YANG Chun-mei,QIAO Yong-feng,DONG Xue-chang,HU Qiu-fen,YANG Guang-yu. Spectrophotometric Determination of Vanadium in Alloy with 2-(2-Quinolinylazo)-1,3-Dihydroxybenzene[J]. Yunnan Chemical Technology, 2003, 30(6): 37-39 |
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| Authors: | RAO min SHUN Hai-lin YANG Chun-mei QIAO Yong-feng DONG Xue-chang HU Qiu-fen YANG Guang-yu |
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| Abstract: | Optimum condition of the color reaction of 2-(2-quinolinylazo)-1,3-dihydroxylbenzene (QADHB) with vanadium (V) was studied. Result showed reaction took place in the presence of CTMAB in a buffered medium of (pH 3.5) to form a stable complex with mole ratio of V∶R as 1∶2, which had maximal absorption at 550 nm, with molar absorption coefficient as 7.79×10~4 L·mol~(-1)·cm~(-1). Beer's law was obeyed in the range of 0～15?μg/25 ml solution of V(V). The reaction had been applied to the determination of vanadium in alloy satisfactorily. |
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| Keywords: | 2-(2-quinolinylazo)-1 3-dihydroxylbenzene vanadium spectrophotometry |
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