| 4，5－二溴邻硝基苯基荧光酮光度法测定微量镓 |
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| 引用本文： | 黄美新,蔡康旭,刘小春.4，5－二溴邻硝基苯基荧光酮光度法测定微量镓[J].冶金分析,2001,21(2):17-18. |
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| 作者姓名： | 黄美新 蔡康旭 刘小春 |
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| 作者单位： | 湘潭工学院资源工程系, |
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| 摘 要： | 研究了镓与4，5-二溴邻硝基苯基荧光酮（DBON-PF）的显色反应，在盐酸—氯化钾介质中，有CTMAB存在下，显色反应灵敏，镓与DBON-PF络合物的最大吸收波长在757nm，络合物的表观摩尔吸光系数ε＝8.2×10
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| 关 键 词： | 镓 4，5－二溴邻硝基苯基荧光酮 分光光度法 |
| 文章编号： | 1000－7571（2001）02－0017－03 |
| 修稿时间： | 2000年6月26日 |
Spectrophotometric
determination of trace gallium with 4, 5-dibromo-2-nitro-phenylfluorone |
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| HUANG Mei-xin,CAI Kang-xu,LIU Xiao-Chun.Spectrophotometric
determination of trace gallium with 4, 5-dibromo-2-nitro-phenylfluorone[J].Metallurgical Analysis,2001,21(2):17-18. |
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| Authors: | HUANG Mei-xin CAI Kang-xu LIU Xiao-Chun |
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| Abstract: | The colour reaction of gallium with 4, 5-dibromo-2-nitro-phenylfluorone(DBON-PF) was investigated. In the medium of HCl-KCl solution containing CTMAB the colour reaction is sensitive. The complex of Ga with DBON-PF has a maximum absorption at 575nm. The apparent molar absorptivity is 8.2 ×104 L*mol-1*cm-1. Be er's law is obeyed for 0-5μg gallium in 25mL solution. The interference of foreign ions was eliminated by extraction with n-butyl acetate. The method has been applied to the determination of trace gallium in ore with satisfactory results. |
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| Keywords: | gallium 4 5 dibromo 2 nitro phenylfluorone spectrophotometry |
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