Evaluation of pressed powders and thin section standards for multi-elemental analysis by conventional and micro-PIXE analysis
Evaluation of pressed powders and thin section standards for multi-elemental analysis by conventional and micro-PIXE analysis
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通过常规和微型 PIXE 分析评估用于多元素分析的压制粉末和薄片标准品
DOI：
10.1142/s0129083510001926
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
and Imaseki H
中科院分区：
文献类型：
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作者：
Homma-Takeda S;Iso H;Ito M;Suzuki K;Harumoto K;Yoshitomi T;Ishikawa T;Oikawa M;Suya N;Konishi T;and Imaseki H
对于多元素分析，使用各种标准来量化环境和生物样品中组成的元素。在本文中，两种不同的配置标准，压制粉末和薄切片标准，评估其目的作为标准的常规和微PIXE分析。验证了添加到压制粉末标准物质中的锰、铁、锌（Zn）、铜和钇的均匀性，并且在62.5-250 µg/g范围内，标准品的X射线强度的相对标准偏差（RSD）<10%。我们建立了金属浓度和标准品的比X射线强度之间的线性关系，这些标准品含有高达250 µg/g的金属。通过在50-250 µg/g范围内对标准品进行10 µ m步进扫描，也证实了添加到薄切片标准品中的Zn的均匀分布（RSD ~ 10%）。从10 µ m2区域获得的X射线强度与金属浓度之间的校准线可接受。
For muti-elemental analysis, various standards are used to quantify the elements consists of environmental and biological samples. In this paper two different configuration standards, pressed powders and thin section standards, were assessed for their purpose as standards by conventional and micro-PIXE analysis. Homogeneity of manganese, iron, zinc (Zn), copper and yttrium added to pressed powder standard materials were validated and the relative standard deviation (RSD) of the X-ray intensity of the standards was <10% within the range, 62.5–250 µg/g. We established linear relationships between the metal concentration and the specific X-ray intensity of standards containing up to 250 µg/g of these metals. A homogenous distribution of Zn added to thin section standard materials was also confirmed by 10-µm-step scanning of the standard within the range, 50–250 µg/g (RSD ~ 10%). The calibration line between the X-ray intensity obtained from a 10-µm2area and the metal concentration was acceptable.