Although in situ analysis by LA-ICP-MS is considered a rapid technique with minimal sample preparation and data reduction, mapping areas of millimetres in size using a small beam (< 15 μm) can be time consuming (several hours) when a quadrupole ICP-MS is used. In addition, fully quantitative imaging using internal standardisation by LA-ICP-MS is challenging in samples with more than one mineral phase present due to varying ablation rates. A new protocol for the quantification of multiple coexisting phases, mapped at a rate of about 12 mm² h^-1 and a resolution of 12 μm × 12 μm per pixel, is presented. The protocol allows mapping of most atomic masses, ranging from ²³Na to ²³⁸U, using a time-of-flight mass spectrometer (ICP-ToF-MS, TOFWERK) connected to a 193 nm excimer laser. A fast-funnel device was successfully used to increase the aerosol transport speed, reducing the time usually required for mapping by a factor of about ten compared with a quadrupole ICP-MS. The lower limits of detection for mid and heavy masses are in the range 0.1–10 μg g^-1, allowing determination of trace to ultra-trace elements. The presented protocol is intended to be a routine analytical tool that can provide greater access to the spatial distribution of major and trace elements in geological materials.

中文翻译：

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一种新的激光烧蚀映射协议（使用快速漏斗）与飞行时间质谱仪 (LA-FF-ICP-ToF-MS) 耦合，用于多种矿物质的快速、同时定量

虽然LA-ICP-MS原位分析被认为是一种快速技术，样品制备和数据减少最少，但使用小光束 (< 15 μm) 绘制毫米大小的区域可能非常耗时（数小时），而四极 ICP - 使用 MS。此外，由于消融率不同，使用 LA-ICP-MS 进行内部标准化的全定量成像对于存在不止一种矿物相的样品具有挑战性。提出了一种用于量化多个共存相的新协议，映射速率约为 12 mm ² h ^-1，分辨率为每像素 12 μm × 12 μm。该协议允许映射大多数原子质量，范围从²³ Na 到²³⁸U，使用连接到 193 nm 准分子激光器的飞行时间质谱仪（ICP-ToF-MS，TOFWERK）。快速漏斗装置已成功用于提高气溶胶传输速度，与四极杆 ICP-MS 相比，通常映射所需的时间减少了大约 10 倍。中等质量和大质量的检测下限在 0.1–10 μg g ^-1范围内，允许测定痕量到超痕量元素。所提出的协议旨在成为一种常规分析工具，可以更好地了解地质材料中主要元素和微量元素的空间分布。