Laser ablation inductively coupled plasma mass spectrometry for quantitative imaging of elements in ferromanganese nodule
Laser ablation inductively coupled plasma mass spectrometry for quantitative imaging of elements in ferromanganese nodule
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DOI：
10.1016/j.chemgeo.2016.02.017
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发表时间：
2016-06
期刊：
影响因子：
3.9
通讯作者：
J. Hirata;Kazuya Takahashi;Y. Sahoo;Miho Tanaka
中科院分区：
文献类型：
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作者：
J. Hirata;Kazuya Takahashi;Y. Sahoo;Miho Tanaka
激光烧蚀电感耦合等离子体质谱(LA-ICPMS)具有灵敏度高、动态范围宽等优点，可用于铁锰结核的元素定量成像，获得常量元素和微量元素的分布。针对铁锰结核元素的定量成像，提出了用镁作为校正内标获得校准线的方法和数据处理方法。通过与电感耦合等离子体质谱仪测定的元素含量的比较，证实了LA-ICPMS测定值的正确性。建立了以颜色和空间信息表示元素含量的LA-ICPMS二维标绘系统。简单的方法描述了可以很容易地改变颜色来定义元素的内容范围，元素分布显示了分层结构，清楚地描绘了对比度。通过分析两个铁锰结核，也证实了这些分析过程的可重复性。该方法有望成为研究铁锰结核周围区域古环境变化及其形成过程的有力工具。
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is used for the quantitative elemental imaging of ferromanganese nodules to obtain the distributions of both major and trace elements, owing to its high sensitivity and wide dynamic range. Methods for obtaining a calibration line, using Mg as an internal standard for correction, and data treatment were developed for the quantitative imaging of elements in ferromanganese nodules. The validity of the values determined by LA-ICP-MS was confirmed by comparison with elemental contents obtained by ICP-MS. A two-dimensional plotting system for LA-ICP-MS was established for expressing elemental contents as colors along with spatial information. The simple method describes the ease with which the colors can be changed to define the content ranges of elements, and the elemental distributions show the layered structure, clearly depicting the contrast. Reproducibility of these analytical processes was also confirmed by analyzing two ferromanganese nodules. The method is expected to be a powerful tool for investigating paleo-environmental changes in the region surrounding a ferromanganese nodule and its formation processes.