| 孔雀绿-次亚磷酸钠体系催化动力学光度法测定痕量钯的研究 |
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| 引用本文： | 李建国,钱晓锋,魏永前.孔雀绿-次亚磷酸钠体系催化动力学光度法测定痕量钯的研究[J].光谱学与光谱分析,2002,22(1):110-112. |
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| 作者姓名： | 李建国 钱晓锋 魏永前 |
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| 作者单位： | 苏州大学化学化工系,江苏,苏州,215006 |
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| 摘 要： | 基于在磷酸 磷酸二氢钾缓冲溶液 (pH =2 0 )中 ,以钯 (Ⅱ )催化次亚磷酸钠还原孔雀绿褪色为指示反应 ,建立了测定痕量钯的动力学光度新方法。该方法的线性范围为 0～ 10 μg·L- 1 ,检出限为 9 78× 10 - 1 1g·mL- 1 。用于某些含钯催化剂样品的测定 ,结果满意。并对反应的机理进行了探讨
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| 关 键 词： | 钯（Ⅱ） 动力学光度法 孔雀绿 次亚磷酸钠 测定 含钯催化剂 痕量分析 |
| 文章编号： | 1000-0593(2002)01-0110-03 |
| 修稿时间： | 2000年12月25 |
Determination of Trace Palladium Based on Kinetic-spectrophotometry with Malachite Green-sodium Hypophosphite System |
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| LI Jian-guo,QIN Xiao-feng,WEI Yong-qian.Determination of Trace Palladium Based on Kinetic-spectrophotometry with Malachite Green-sodium Hypophosphite System[J].Spectroscopy and Spectral Analysis,2002,22(1):110-112. |
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| Authors: | LI Jian-guo QIN Xiao-feng WEI Yong-qian |
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| Institution: | Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China. |
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| Abstract: | A new kinetic-spectrophotometric method for the determination of trace amount of palladium has been proposed. It is based on the palladium catalysed discoloring reaction of malachite green reduced by sodium hypophosphite in phosphoric acid buffer solution (pH = 2.0). The linear range of determination of palladium is 0-10 microgram.L-1, the detection limit is 9.78 x 10(-11) g.mL-1. The method has been used for the determination of palladium in some catalyst with satisfactory results. The mechanism of the reaction has also been discussed. |
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