| Catalytic Spectrophotometric Determination of Ultratrace Amounts of Silver with Solubilizing Effect of Nonionic Surfactant |
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| 作者姓名： | 郭效军 邓启良 彭波 高锦章 康敬万 |
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| 作者单位： | GUO，Xiao-Jun DENG，Qi-Liang PENG，BoGAO，Jin-Zhang KANG，Jing-WanChemistry & Chemical Engineering College，Northwest Normal University，Lanzhou，Gansu 730070，China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (No .Z95 75 2 0 7)andKejiChuangxinGongcheng 01,NorthwestNormalUniversity,China ,2 0 0 0 |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＴｒｉａｚｅｎｅｒｅａｇｅｎｔｓａｒｅｉｎｔｅｒｅｓｔｉｎｇｂｅｃａｕｓｅｏｆｔｈｅｉｒｓｔｒｏｎｇｃｏｍｐｌｅｘａｔｉｏｎａｂｉｌｉｔｉｅｓｗｉｔｈｔｒａｎｓｉｔｉｏｎｍｅｔａｌｓ .1 6Ｈｏｗｅｖｅｒ,ｌｉｔｔｌｅｄｅｃｏｌｏｒａｔｉｏｎｏｆｔｈｅｍｃａｔａｌｙｚｅｄｂｙｓｉｌｖｅｒｉｏｎｈａｓｂｅｅｎｓｔｕｄｉｅｄｉｎａｎａｌｙｔｉｃａｌｃｈｅｍｉｓｔｒｙ .Ｍａｎｙａｎａｌ ｙｓｉｓｔｓｈａｖｅｒｅｐｏｒｔｅｄｔｈｅｕｓｅｏｆｃａｔａｌｙｔｉｃｒｅａｃｔｉｏｎｓｆｏｒｔ…
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| 关 键 词： | 催化分光光度测定 超示踪量 增溶作用 合成 银 非离子表面活性剂 三氮烯 脱色 4，4－′－二（安替比林－4－重氮氨基）－联苯 |
Catalytic Spectrophotometric Determination of Ultratrace Amounts of Silver with Solubilizing Effect of Nonionic Surfactant |
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| Xiao‐Jun Guo,Qi‐Liang Deng,Bo Peng,Jin‐Zhang Gao,Jing‐Wan Kang.Catalytic Spectrophotometric Determination of Ultratrace Amounts of Silver with Solubilizing Effect of Nonionic Surfactant[J].Chinese Journal of Chemistry,2002,20(1):39-44. |
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| Authors: | Xiao‐Jun Guo Qi‐Liang Deng Bo Peng Jin‐Zhang Gao Jing‐Wan Kang |
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| Abstract: | The synthesis and analytical properties of 4,4′‐bis(antipyrinyl‐4‐diazoamino) biphenyl (BAPDAB) were described for the first time. A catalytic kinetic method for the determination of silver was proposed. In the presence of Triton X‐100 as a solubilizing agent and 2,2′‐dipyridyl as an activator, silver has a very strong catalytic effect on oxidative decoloration of BAPDAB by persulfate in acetic add medium. The reaction was followed spectrophotometrically by measuring the decrease of absorbance of BAPDAB at 478 nm and 50 °C. The calibration graphs are of good linearity in the range of 8.0 × 10?10–1.0 × 10?6 mol/L by a fixed time method. The limit of detection is down to 5.0 × 10?10 mol/L. The catalytic reaction is pseudo‐first‐order with respect to silver, which in real samples was determined with satisfactory results. |
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| Keywords: | catalytic spectrophotometric determination silver nonionic surfactant |
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