The attractive physical and chemical properties of corundum lend to this material’s importance in both its natural and synthetic forms. However, much of the quantitative work performed on this material is plagued by unknown inaccuracy as non‐matrix‐matched reference materials are used. To conduct accurate quantitative analysis using SIMS, matrix‐specific relative sensitivity factors (RSFs) were determined for eighteen trace elements in corundum using dose‐verified ion implants. The RSF values ranged from 2.56 × 10²² to 3.29 × 10²⁴ cm^‐1 with total combined uncertainty values ranging from 7 to 10%. The RSF values, which are related to ionisation potentials, showed trends consistent with expectations for an insulating oxide. The developed values were applied to calibrate reference materials for LA‐ICP‐MS and to study other natural and synthetic corundum samples. A measurement reference material calibrated for Mg, Si, Ti, V, Fe and Ga produced consistent results over ten sessions in 4 years with relative standard deviations per trace element of 5% or less, confirming the repeatability of our process. A key finding was that calibrating LA‐ICP‐MS with NIST SRM 610 and 612 glasses to analyse corundum resulted in under‐reporting trace elements Be, Ti, V, Fe, Co, Ni and Ga compared with using matrix‐matched reference materials.

中文翻译：

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刚玉中精确的痕量元素报告：二次离子质谱法相对灵敏度因子的发展

刚玉具有吸引力的物理和化学特性，使其在天然和合成形式中都具有重要的意义。但是，由于使用了非基质匹配的参考物质，因此对这种物质进行的许多定量工作都受到未知误差的困扰。为了使用SIMS进行准确的定量分析，使用剂量验证的离子植入剂确定了刚玉中18种微量元素的基质特异性相对灵敏度因子（RSF）。RSF值范围从2.56×10 ²² 到3.29×10 ²⁴ cm ^-1总合并不确定性值在7％到10％之间。与电离电势相关的RSF值显示出与绝缘氧化物期望值一致的趋势。所开发的值可用于校准LA‐ICP‐MS的参考物质，并用于研究其他天然和合成刚玉样品。经过校准的Mg，Si，Ti，V，Fe和Ga基准测量材料在4年的10个疗程中产生了一致的结果，每个痕量元素的相对标准偏差为5％或更小，证实了我们工艺的可重复性。一个关键的发现是，与使用基质匹配的参考材料相比，使用NIST SRM 610和612眼镜校准LA-ICP-MS来分析刚玉会导致痕量元素Be，Ti，V，Fe，Co，Ni和Ga的报告不足。