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Microanalysis of platinum in hydrogenetic ferromanganese crust using SIMS

机译:使用SIMS对氢化铁锰外壳中的铂进行微量分析

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Heretofore the presence of platinum in the hydrogenetic ferromanganese crust has been known yet, the host to platinum has remained poorly understood. Here we first report on the microanalysis of platinum in ferromanganese crust using secondary ion mass spectrometry (SIMS). SIMS microanalysis revealed that Pt concentration of vernadite was between 0.21 and 1.22 ppm, and that of brown matrix was very low (around the detection limit of 0.036 ppm or less) in a ferromanganese crust. The SIMS spatial resolution was 3 mu m by 3 mu m on the sample surface, and several tens of nanometers along the depth. A novel Pt detection method using SIMS was performed, in which most SIMS depth profiles show homogeneous Pt concentrations (0.21 to 0.55 ppm), however, some profiles detected local enrichment of Pt on the nm level.
机译:迄今为止,已知在氢化铁锰壳中存在铂,但对铂的主体仍知之甚少。在这里,我们首先报告使用二次离子质谱(SIMS)对锰铁皮中的铂进行微量分析。 SIMS微量分析表明,锰铁皮中白云母的Pt浓度在0.21至1.22 ppm之间,而棕色基质的Pt浓度非常低(约在0.036 ppm或更低的检出限附近)。 SIMS在样品表面的空间分辨率为3微米乘3微米,沿深度为几十纳米。进行了使用SIMS的新型Pt检测方法,其中大多数SIMS深度分布图显示均一的Pt浓度(0.21至0.55 ppm),但是,某些分布图检测到纳米级的Pt局部富集。

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