| N-苄基-N′-（氨基对苯磺酸钠）硫脲的合成及与钯的显色反应 |
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| 引用本文： | 郝桂霞,储召华.N-苄基-N′-（氨基对苯磺酸钠）硫脲的合成及与钯的显色反应[J].光谱实验室,2011,28(3):1123-1126. |
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| 作者姓名： | 郝桂霞 储召华 |
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| 作者单位： | 韩山师范学院化学系,广东省潮州市东山路东丽B区,521041 |
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| 基金项目： | 韩山师范学院科研基金项目(413428) |
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| 摘 要： | 合成了显色剂N-苄基-N′-（氨基对苯磺酸钠）硫脲（BSATu）,并研究了其与Pd（Ⅱ）的显色反应。在pH 4.0的醋酸-醋酸钠缓冲溶液中,该试剂与钯离子形成摩尔比为3∶1的棕色配合物,其最大吸收波长为282nm,表观摩尔吸光系数达到4.12×104L.mol-1.cm-1,Pd（Ⅱ）的浓度在0—2.4μg/mL范围内符合朗伯-比耳定律。该法用于测定催化剂中钯的含量,结果满意。
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| 关 键 词： | N-苄基-N′-（氨基对苯磺酸钠）硫脲 合成 钯 分光光度法 |
Synthesis of N-Benzyl-N′-(Sodium-p-Aminobenzenesulfonate) Thiourea and Its Color Reaction with Palladium |
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| HAO Gui-Xia CHU Zhao-Hua.Synthesis of N-Benzyl-N′-(Sodium-p-Aminobenzenesulfonate) Thiourea and Its Color Reaction with Palladium[J].Chinese Journal of Spectroscopy Laboratory,2011,28(3):1123-1126. |
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| Authors: | HAO Gui-Xia CHU Zhao-Hua |
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| Institution: | HAO Gui-Xia CHU Zhao-Hua(Department of Chemistry,Hanshan Normal University,Chaozhou,Guangdong 521041,P.R.China) |
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| Abstract: | A new reagent N-benzyl-N＇-（sodium-p-aminobenzenesulfonate）thiourea （BSATu） was synthesized,and its color reaction with Pd（Ⅱ） was studied.In the medium of pH 4.0 NaAc-HAc buffer solution,the reagent reacted with Pd（Ⅱ） to form a stable pale brown complex with a molar ratio of 3∶1.The apparent molar absorptivity coefficient of the complex was 4.12×104L·mol-1·cm-1 at 282nm.Beer′s law was obeyed in the range of 0—2.4μg/mL for Pd（Ⅱ）.The method was applied to the determination of trace Pd（Ⅱ） in catalyst samples with satisfactory results. |
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| Keywords: | N-Benzyl-N′-（Sodium-p-Aminobenzenesulfonate）Thiourea Synthesis Palladium Spectrophotometry |
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