| 催化动力学光度法测定痕量钯 |
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| 引用本文： | 张志琪 郑行望. 催化动力学光度法测定痕量钯[J]. 分析化学, 1995, 23(11): 1326-1328 |
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| 作者姓名： | 张志琪 郑行望 |
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| 作者单位： | 陕西师范大学化学系 西安710062 |
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| 摘 要： | 在磷酸－磷酸二氢钾缓冲溶液中，以钯（Ⅱ）催化次磷酸钠还原罗丹明Ｂ褪色为指示反应，建立了痕量钯的动力学光度分析新方法。在金（Ⅱ）的存在下，检测下限达５×１０＾－１１ｇ／ｍＬ钯（Ⅲ），方法应用于模拟合金样和含钯分子筛中钯的测定。结果满意。
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| 关 键 词： | 钯 罗丹明B 动力学分析 光度法 金 |
Catalytic Kinetic Spectrophotometry for the Determination of Trace Palladium |
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| Zhang Zhiqi,Zheng Xingwang,Cui Licheng. Catalytic Kinetic Spectrophotometry for the Determination of Trace Palladium[J]. Chinese Journal of Analytical Chemistry, 1995, 23(11): 1326-1328 |
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| Authors: | Zhang Zhiqi Zheng Xingwang Cui Licheng |
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| Abstract: | A catalytic spectrophotometry for the determination of trace palladium was developed. It is based on the palladium(O) catalysis to decoloration of rhodamine B being reduced by sodium hypophosphite in phosphoric acid buffer solution (pH 2. 0) and gold( III ) as a catalyst carrier. The range of determination is 1. 2 -150 ng/25 mL for palladium. The method has been applied to the determination of palladium in simulated alloy and molecular sieve catalyst with the precision of 0. 58% and 4. 2%, respectively |
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| Keywords: | Palladium rhodamine B kinetic analysis catalytic spectrophotometry |
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