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金屬催化器中鉑、鈀和銠測定方法研究
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國家自然科學(xué)基金資助 (51276128)


Determination of Precious Metals in Metal Catalytic Converter
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    摘要:

    分析了金屬催化轉(zhuǎn)化器在汽車行業(yè)的市場前景和行業(yè)管理現(xiàn)狀。針對車用金屬催化轉(zhuǎn)化器樣品,建立了用ICP-MS法測定催化劑涂層中貴金屬Pt、Pd、Rh含量的方法。采用6 mol/L鹽酸溶液浸泡樣品,將得到的濾液與不溶物分別經(jīng)過碲共沉淀制備成試液。經(jīng)過8家實驗室的共同驗證:本方法對于Pt、Pd、Rh 3種元素,各試驗室的樣品測定結(jié)果與參考值的相對偏差均小于10%,再現(xiàn)性不確定度分別為:6.6%、6.5%、5.8%,本方法檢出限低,回收率高,再現(xiàn)性好,可行性強

    Abstract:

    The market prospect and industry management of metal catalytic converters in the automotive industry was analyzed. For the automotive metal catalytic converter samples, a determination method for precious metal Pt, Pd and Rh using ICP-MS was established. After soaked in 6 mol/L HCl solution, the sample turned into filtrate and insoluble, and then they were prepared into test solutions separately after tellurium co-precipitation. The method was co-verified by eight laboratories, and the results are as following: for Pt, Pd and Rh, the relative deviations between the determination results and the corresponding reference values are all less than 10%, and the reproducibility uncertainties are 6.6%, 6.5% and 5.8%, respectively. It is concluded that the method has low detection limits, high recoveries, good reproducibility and satisfactory feasibility

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李 軍,劉 悅,方茂東.金屬催化器中鉑、鈀和銠測定方法研究[J].稀有金屬材料與工程,2015,44(4):871~875.[Li Jun, Liu Yue, Fang Maodong. Determination of Precious Metals in Metal Catalytic Converter[J]. Rare Metal Materials and Engineering,2015,44(4):871~875.]
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  • 收稿日期:2014-04-17
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  • 在線發(fā)布日期: 2015-06-08
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