| 2-(2-喹啉偶氮)-4,5-二甲基苯酚光度法测定水中的铁 |
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| 引用本文： | 韩勇,董学畅,王美香,张甜,吴方评. 2-(2-喹啉偶氮)-4,5-二甲基苯酚光度法测定水中的铁[J]. 云南化工, 2004, 31(5): 39-40,42 |
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| 作者姓名： | 韩勇 董学畅 王美香 张甜 吴方评 |
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| 作者单位： | 云南民族大学化学与生物技术学院,云南昆明,650031 |
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| 摘 要： | 研究了2 (2 喹啉偶氮) 4,5 二甲基苯酚(QADMP)与铁(Ⅲ)的显色反应,在pH=4.0的HAc NaAc缓冲介质中,在CTMAB存在下,QADMP与铁(Ⅲ)生成2∶1稳定的配合物,该配合物λmax=580nm,摩尔吸光系数ε为5.02×104L·mol-1·cm-1,铁含量在0～10μg/25mL内符合比尔定律,方法用于水样中微量铁(Ⅲ)的测定,结果满意。
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| 关 键 词： | 2(2喹啉偶氮)4,5二甲基苯酚 铁 分光光度法 |
| 文章编号： | 1004-275X(2004)05-0039-03 |
Spectrophotometric Determination of Iron from Water with 2-(2-quinolinlazo)-4,5-dimethylhydroxybenzen |
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| HAN Yong,DONG Xue-chang,WANG Mei-xiang,ZHANG Tian,WU Fang-ping. Spectrophotometric Determination of Iron from Water with 2-(2-quinolinlazo)-4,5-dimethylhydroxybenzen[J]. Yunnan Chemical Technology, 2004, 31(5): 39-40,42 |
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| Authors: | HAN Yong DONG Xue-chang WANG Mei-xiang ZHANG Tian WU Fang-ping |
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| Abstract: | Color reaction of iron (Ⅲ) with 2-(2-quinolinlazo)-4,5-dimethylhydroxybenzen was studied. In the presence of pH 4.0, HAc-NaAc buffer solution and CTMAB medium, QADMP was reacted with iron (Ⅲ) to form a stable 2∶1 complex, with the maximum absorption at 580 nm and molar absorption of 5.02×10~4?L·mol~(-1)·cm~(-1). Beer's law was obeyed in the range of 0～10.0?μg/25?mL. The method was used in the determination of iron from water with satisfactory results. |
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| Keywords: | 2-(2-quinolinlazo)-4,5-dimethylhydroxybenzen iron (Ⅲ) spectrophotometry |
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