| Tween-80-5-Br-PADAP光度法同时测定微量铁和钴 |
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| 引用本文： | 斯钦,贾长宽,赛音娜,海梅荣. Tween-80-5-Br-PADAP光度法同时测定微量铁和钴[J]. 光谱学与光谱分析, 2000, 20(5): 747-748 |
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| 作者姓名： | 斯钦 贾长宽 赛音娜 海梅荣 |
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| 作者单位： | 内蒙古师范大学化学系,010022,呼和浩特;内蒙古师范大学化学系,010022,呼和浩特;内蒙古师范大学化学系,010022,呼和浩特;内蒙古师范大学化学系,010022,呼和浩特 |
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| 基金项目： | 内蒙古自治区教育厅科学基金资助 |
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| 摘 要： | 研究了 5 Br PADAP与铁和钴同时显色反应及测定的适宜条件。试验证明 ,在 pH为 3 4的HAc NaAc介质中 ,显色剂与铁和钴形成稳定有色络合物 ,λmax均为 5 85nm ,铁量 0～ 10 μg·2 5mL-1,钴量 0～ 12μg·2 5mL-1符合比耳定律 ,表观摩尔吸光系数εFe585为 7 18× 10 4 ,εCo585为 9 2 7× 10 4 。据此测定水样中微量铁和钴 ,结果良好。
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| 关 键 词： | 铁 钴 5-Br-PADAP 分光光度法 |
Simultaneous Spectrophotometric Determination of Trace Ferrum and Cobalt with 5-Br-PADAP and Tween-80 |
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| Siqin,Changkuan JIA,Saiyinna,Meirong HAI. Simultaneous Spectrophotometric Determination of Trace Ferrum and Cobalt with 5-Br-PADAP and Tween-80[J]. Spectroscopy and Spectral Analysis, 2000, 20(5): 747-748 |
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| Authors: | Siqin Changkuan JIA Saiyinna Meirong HAI |
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| Affiliation: | Department of Chemistry, Inner Mongolia Normal University, 010022 Hohhot. |
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| Abstract: | A new simultaneous method for the determination of ferrum and cobalt with 5-Br-PADAP by spectrophotometry in the presence of Twen-80 is studied. The results showed that in pH = 3.4 HAc-NaAc buffer medium, ferrum and cobalt can formed colored complexes with 5-Br-PADAP. Its maximum absorption wavelengths are at 585 nm. Beer's law is obeyed for the concentration of ferrum in the range of 0-10 micrograms.25 mL-1 and 0-12 micrograms.25 mL-1 of cobalt. The apparent molar absorptivities are epsilon 585Fe = 7.18 x 10(4) and epsilon 585Co = 9.27 x 10(4) respectively. This method has been applied to the determination of ferrum and cobalt in water sample with satisfactory results. |
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| Keywords: | Ferrum Cobalt 5-Br-PADAP Spectrophotomet ry |
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