| 微乳液介质-5-Br-PADAP分光光度法测定铝合金中的锰(Ⅱ) |
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| 引用本文： | 吴丽香,柏红珠,赵男.微乳液介质-5-Br-PADAP分光光度法测定铝合金中的锰(Ⅱ)[J].现代仪器,2007,13(5):70-71,62. |
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| 作者姓名： | 吴丽香 柏红珠 赵男 |
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| 作者单位： | 1. 辽宁石油化工大学石油化工学院,抚顺,113001
2. 抚顺石油化工分公司石油一厂质检处,抚顺,113008 |
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| 摘 要： | 以含水85%的油/水型微乳液(OP/正丁醇/正庚烷/水=10∶4∶1∶85)为介质,2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(5-Br-PADAP)为显色体系的分光光度法,测定铝合金中的锰(Ⅱ),在微乳液介质中锰(Ⅱ)最大吸收波长位于568nm处,锰(Ⅱ)在0~8μg/10mL范围内符从比尔定律,表观摩尔吸收系数ε568=1.178×105L/(mol.cm)。采用联合掩蔽剂消除N i2+、Cu2+、Ti2+、Cd2+、Zn2+等离子的干扰,测定抚顺铝厂普铝、LD31铝合金样中的锰(Ⅱ),相对标准偏差RSD为0.92%、1.5%。加标回收率分别为97.86%、97.74%。该方法灵敏度高、选择性好。
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| 关 键 词： | 微乳液 5-Br-PADAP 分光光度法 铝合金 Mn(Ⅱ) |
Determination of Mn( Ⅱ ) in aluminium alloy with microemulsion-5-Br-PADAP by spectrophotometry |
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| Wu Lixiang,Bai Hongzhu,Zhao Nan.Determination of Mn( Ⅱ ) in aluminium alloy with microemulsion-5-Br-PADAP by spectrophotometry[J].Modern Instruments,2007,13(5):70-71,62. |
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| Authors: | Wu Lixiang Bai Hongzhu Zhao Nan |
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| Abstract: | Mn(Ⅱ) in aluminium alloy was determined directly with the colorination system of 2-(5-Br-2-pyridy-lazo)-5-dethylaminophenol(5-Br-PADAP) and o/w microemulsion contained 85%water by spectrophotometry in this paper.the absorption of this complex compoundreaches maximunvalue and the absorption pcak is at 568nm.results showthat Beer's lawis obeyed when the Mn(Ⅱ) amount is 0 ~8μg /10mL,and the apparent molarabsorption coefficient is 1.178×105L.mol-1.cm-1.The interference of Ni2 +、Cu2 +、Ti2 +、Cd2 +、Zn2 +ions was eliminated by dimethylglyoxime、sodium fluoride and citric acid,.Mn(Ⅱ) content in Fushun Aluminiumworks'Pu Aluminium、LD31were determined by the method,whose RSD is 0.92%、1.5%.the average recovery rate is 97.86% and 97.74%.the method has many advantages such as high sensitivity、high selectivity. |
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| Keywords: | 5-Br-PADAP |
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