Laser-ablation inductively coupled plasma mass spectrometer for geofluids and geomaterials research

激光烧蚀电感耦合质谱仪(LA-ICPMS)分析固体物质、流体和熔融包裹体在地球和材料科学中得到了广泛的应用。现代强大的准分子激光消融系统与最先进的快速和高灵敏度电感耦合等离子体质谱仪相结合，促进了流体包裹体和矿物中痕量金属的多元素分析的根本突破，我们在成矿地质流体中金属浓度和主要经济矿藏形成的研究记录中证明了这一点。因此，我们申请资助一个新的LA-ICPMS系统，该系统包括一个适用于流体包裹体研究的193 nm准分子激光消融系统(可升级红外光学系统，以应用于不透明的寄主矿物)和新一代快速、灵敏的四极ICPMS仪器。这将使开展地球流体和地质材料方面的前沿研究成为可能，包括地壳流体中卤素的来源和分配、热液系统中关键金属的迁移和沉积、世界级矿床的形成、不透明矿石矿物中矿石金属的浓缩、盐体系中流体的化学以及痕量金属和卤素在碳氢化合物流体中的行为。

Laser-ablation inductively coupled mass spectrometry (LA-ICP-MS) analysis of solid materials and fluid and melt inclusions is becoming widely used in Earth and Materials Sciences. Modern powerful excimer laserablation systems coupled to state-of-the-art fast and high-sensitivity ICP mass spectrometers facilitate fundamental breakthroughs in the multi-element analysis of fluid inclusions and of trace metals in minerals, as demonstrated by our track record in research on metal concentrations in ore-forming geological fluids and the formation of major economic mineral deposits. We therefore apply for a funding for a new LA-ICP-MS system composed of an 193 nm excimer laser-ablation system suitable for fluid inclusion research (upgradable with infrared optics for application to opaque host minerals) and a next-generation fast and sensitive quadrupole ICP-MS instrument. This will make it possible to perform frontier research in geofluids and geomaterials, including the sources and partitioning of halogens in crustal fluids, the transport and deposition of critical metals in hydrothermal systems, the formation of world-class ore deposits, the concentration of ore metals in opaque ore minerals, the chemistry of fluids in salt systems, and the behavior of trace metals and halogens in hydrocarbon fluids.