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Sun H.-L.,Henan Province Rock & Mineral Testing Center | Sun H.-L.,Ministry of Land and Resources Key Laboratory of Precious Metals Analysis Technology | Wang L.,Henan Province Rock & Mineral Testing Center | Wang L.,Ministry of Land and Resources Key Laboratory of Precious Metals Analysis Technology | And 6 more authors.
Yejin Fenxi/Metallurgical Analysis | Year: 2015

The sample was decomposed by KClO3 in HCl-H2O2 wet system. It not only overcame the influence of NO3 - to platinum and palladium, but also greatly enhanced the decomposition capacity. After decomposition in HCl-H2O2-KClO3 high-efficiency wet system, the sample solution was separated and enriched by activated carbon-717 anion exchange resin mixed adsorbent in 10% (V/V) HCl medium. The influence of interference elements could be effectively eliminated. The Pt 265.945{127} nm, Pd 340.458{99} nm and Au 242.795{139} nm were used as analytical lines. The determination method of platinum, palladium and gold in geological samples by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. The detection limit of platinum, palladium and gold was 0.015, 0.012 and 0.005 1 μg/g, respectively. The low limit of determination was 0.050, 0.040 and 0.017 μg/g, respectively. The platinum, palladium and gold in standard geological samples were determined according to the experimental method, and the relative standard deviations (RSD, n=10) were less than 6.7%. The found results were consistent with the certified values. © 2015, Central Iron and Steel Research Institute. All right reserved.

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