时 间：2026年1月22日上午9:30
地 点：理工楼18号楼-307会议室
主 讲：Dr. Konstantin Kokh，首席研究员，俄罗斯新西伯利亚地质矿物研究所
主 办：光电与信息工程学院，医学光电科学与技术教育部重点实验室，福建省光子技术重点实验室
专家简介：Dr. Konstantin Kokh holds a PhD (2008) and Doctor of Sciences (DSc, 2022) in Earth Sciences. His research focuses on phase equilibria, crystal growth, and the functional properties of advanced materials. He has authored over 280 publications (h-index = 35). His team’s work includes the development of new approaches to the synthesis and growth of chalcogenide crystals, the discovery of novel compounds in borate systems, and the study of crystals with unusual electronic properties—research reflected in three co-authored papers published in Nature (2018, 2021, 2023).
讲座简介：In his talk Dr. Kokh will present a novel methodology for producing matrix-matched reference materials tailored for Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS)—a cornerstone technique for in situ trace element analysis in minerals and other materials. Accurate quantification of trace impurities, including precious and platinum-group elements (Au, Ag, Pd, Pt), in sulfide minerals is critical for understanding ore-forming processes and optimizing mineral processing. However, the reliability of LA-ICP-MS remains limited by the scarcity of homogeneous, compositionally appropriate reference standards.
To address the critical shortage of matrix-matched standards for LA-ICP-MS, Dr. Kokh’s group has developed a solid-state doping strategy that replaces conventional liquid-based impregnation. The resulting reference materials closely replicate the composition and behavior of natural minerals, significantly improving the accuracy and reproducibility of microanalysis. Beyond geochemistry, this methodology holds broad potential across materials science, from semiconductor characterization to environmental materials research. The seminar will also present ongoing interlaboratory validation efforts, including planned collaborations with institutions in China, marking a major step toward standardized, high-precision analysis of complex real-world materials.