| 一个新的测定镍的分光光度法——-以2-4-溴-2-苯骈噻唑偶氮)-5-二乙胺基苯酚作试剂 |
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| 引用本文： | 周天泽,齐大勇,张朝平.一个新的测定镍的分光光度法——-以2-4-溴-2-苯骈噻唑偶氮)-5-二乙胺基苯酚作试剂[J].化学学报,1983,41(3):237-241. |
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| 作者姓名： | 周天泽 齐大勇 张朝平 |
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| 作者单位： | 中国科学院环境化学研究所;贵州大学化学系 |
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| 摘 要： | At pH 9.5 nickel reacts with 2-(6-bromo-2-benzothiazolylazo)-5 diethylamino-phenol (Br-BTAE) in the presence of Tween-80 and sodium lauryl sulfate to form a red-violet complex which has an absorption maximum at 540 nm (e 2.5X10^5). Though this is also the absorption maximum of the reagent, yet the reagent will readily decompose at 40-50`C within 20 min. The reagent blank is low and the error is negligible. Beer's law is obeyed for 0.01-0.125 \mγ nickel in a 1mL solution. The composition of the complex was found to be Ni/Br-BTAE=1:2 by the continuous-variation method. This method can be applied to the determination of nickel in electroplating waste-water and in copper-aluminium alloy and steel samples after extraction with dimethylglyoxime. The results of the analysis agree with that from AAS and dimethylglyoxime method
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| 关 键 词： | 分光光度法 苯酚P 有机溴化合物 镍 显色剂 噻唑偶氮化合物 二乙胺P 苯并噻唑P |
A new spectrophotometric method of determination of nickel (II) with 2-(6)-bromo-2-benzothiazolylazo)-5-diethylaminophenol in the presence of surfactants |
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| ZHOU TIANZE,QI DAYONG,ZHANG CHAOPING.A new spectrophotometric method of determination of nickel (II) with 2-(6)-bromo-2-benzothiazolylazo)-5-diethylaminophenol in the presence of surfactants[J].Acta Chimica Sinica,1983,41(3):237-241. |
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| Authors: | ZHOU TIANZE QI DAYONG ZHANG CHAOPING |
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| Abstract: | At pH 9.5 nickel reacts with 2-(6-bromo-2-benzothiazolylazo)-5 diethylamino-phenol (Br-BTAE) in the presence of Tween-80 and sodium lauryl sulfate to form a red-violet complex which has an absorption maximum at 540 nm (e 2.5X10^5). Though this is also the absorption maximum of the reagent, yet the reagent will readily decompose at 40-50`C within 20 min. The reagent blank is low and the error is negligible. Beer's law is obeyed for 0.01-0.125 \mγ nickel in a 1mL solution. The composition of the complex was found to be Ni/Br-BTAE=1:2 by the continuous-variation method. This method can be applied to the determination of nickel in electroplating waste-water and in copper-aluminium alloy and steel samples after extraction with dimethylglyoxime. The results of the analysis agree with that from AAS and dimethylglyoxime method |
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| Keywords: | SPECTROPHOTOMETRY PHENOL P ORGANO BROMINE COMPOUNDS NICKEL COLOUR REAGENTS THIAZOLE-AZO COMPOUNDS DIETHYLAMINE P BENZOTHIAZOLE P |
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