A new reference material, STDGL3, for the calibration of in situ analyses of sulfide minerals by LA-ICP-MS has been developed and characterised. It represents a lithium-borate-based glass containing a mixture of Zn- and Fe-sulfide concentrates doped with several chalcophile elements as well as Zr, Gd, Hf and Ta required for assessing common interferences on Ag, Au and Pt. STDGL3 has a wider range of elements and a better homogeneity compared with existing reference materials for LA-ICP-MS analysis of sulfides. Compositional variations for most elements are below 3% RSD, below 5% RSD for Ag, Au and Pt, and below 7% RSD for Se, when performing spot analyses with a 50 μm beam size. Its preparation recipe is reproducible allowing for multiple batches to be made. Use of STDGL3 significantly improves accuracy of sulfide mineral analysis by LA-ICP-MS when compared with use of other available reference materials. Performance of STDGL3 was evaluated using several different laser systems. No significant change was observed between 193 nm ArF excimer lasers with 5 and 20 ns pulse widths, but use of 213 and 248 nm lasers displays more systematic differences, especially when analysing galena. Correction coefficients are needed for some elements (Zn and Cd in particular) when analysing sulfide minerals using STDGL3 as a calibration reference material.

中文翻译：

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STDGL3，用于通过激光烧蚀 ICP-MS 分析硫化物矿物的参考材料：基质效应以及激光波长和脉冲宽度影响的评估

用于原位校准的新参考材料 STDGL3LA-ICP-MS 硫化物矿物分析方法已得到开发和表征。它代表一种基于硼酸锂的玻璃，含有硫化锌和硫化铁精矿的混合物，掺杂有几种亲铜元素以及评估银、金和铂常见干扰所需的锆、钆、铪和钽。与现有硫化物LA-ICP-MS分析标准物质相比，STDGL3具有更广泛的元素范围和更好的均匀性。当使用 50 µm 光束尺寸进行点分析时，大多数元素的成分变化低于 3% RSD，Ag、Au 和 Pt 低于 5% RSD，Se 低于 7% RSD。其制备配方是可重复的，允许进行多批次生产。与使用其他可用参考材料相比，使用 STDGL3 显着提高了 LA-ICP-MS 硫化物矿物分析的准确性。使用几种不同的激光系统评估 STDGL3 的性能。脉冲宽度为 5 ns 和 20 ns 的 193 nm ArF 准分子激光器之间没有观察到显着变化，但使用 213 nm 和 248 nm 激光器则显示出更系统的差异，特别是在分析方铅矿时。使用 STDGL3 作为校准参考物质分析硫化物矿物时，需要对某些元素（特别是 Zn 和 Cd）进行校正系数。