| 新试剂3,5-二溴-4-偶氮对N,N-二甲苯胺苯基荧光酮分光光度法测定微量锰 |
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| 引用本文： | 黄应平,刘义荣.新试剂3,5-二溴-4-偶氮对N,N-二甲苯胺苯基荧光酮分光光度法测定微量锰[J].环境科学与技术,1997(4):24-26. |
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| 作者姓名： | 黄应平 刘义荣 |
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| 作者单位： | [1]湖北三峡学院师范学院化学系 [2]湖北环境保护研究所 |
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| 基金项目： | 湖北省教委重点科研资助 |
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| 摘 要： | 本文研究了新试剂3，5-二溴-4-偶氛对N，N-二甲苯胶末基荧光酮（DBAMPF）与锰（Ⅱ）的显色反应和光度性质，在阳离子表面活性剂溴化十六烷基三甲按（CTMAB）存在下，pH9．0NH3H2O～NH4Cl介质中，试剂与锰（Ⅱ）形成2∶1的红色配合物，最大吸收波长为580nm，表观摩尔吸光系数为1.12×106l·mol-1·cm-1，锰（Ⅱ）浓度在0～8μg／25ml范围内符合比尔定律，拟定方法用于水质中标的测定，其方法灵敏度高，重视性好，结果令人满意。
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| 关 键 词： | 分光光度法 锰 3，5-二溴-4-偶氮对N，N-二甲苯胺苯基荧光酮 |
Spectrophotometric Determination of trace amounts of Manganese with a new Reagent DBAMPF |
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| Huang Yingping, Xu Dengqing.Spectrophotometric Determination of trace amounts of Manganese with a new Reagent DBAMPF[J].Environmental Science and Technology,1997(4):24-26. |
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| Authors: | Huang Yingping Xu Dengqing |
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| Institution: | Huang Yingping; Xu Dengqing (Department of Chemistry Hubei Shanxia teacher's college Yichang 443000)Liu Yirong (Whuan 430072) |
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| Abstract: | The colour reaction of Mn (Ⅱ) with new reagent 3, 5-dibr0mo-4-(4'-dimethylaniline azo)phenylfluorone has been studied in the presence of CTMAB,in the medium of NH3H2O~NH4Cl (pH 9.0).The colour reaction of reagent with Mn(Ⅱ) has formed a 1: 2 complex. Its λmax is 580 nm. Its appartent molar absorptivity js 1. 12×105 l·mol-1·cm-1 Beer's law is obeyed in the range of o to 8μg Mn(Ⅱ)/25 ml.The proposed methed has been applied to the speotrophotometric determination of trace amounts Manganese in water with Satisfactory results |
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| Keywords: | Spectrophotometry Manganese 3 5-dibrorno-4-(4'-dimethylaniline azo)phenylfluorone |
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