In-situ quantification of ultra low-level Au and Pt contents in organic-rich sedimentary rocks by laser-ablation quadrupole ICPMS
This research project is in the field of analytical geochemistry applied to the study of sedimentary-hosted gold deposits. The project aims at developing a new in-situ approach for determining ultra-low levels of Au and Pt in sedimentary rocks. The technique will take advantage of recent developments in instrumentation of laser ablation microprobes and quadrupole ICPMS, which resulted in a substantially increased sensitivity of the technique. The rationale behind the project is to develop a novel technique that can overcome the long-standing problems with bulk-rock low-level analysis of Au and Pt. The project will be undertaken within the CODES LA-ICPMS analytical laboratory which houses the latest state-of-the-art models of laser-ablation microprobes and quadrupole mass-spectrometers. The project will involve a large component of laboratory work focused on 1) developing protocols for precise bulk rock analysis of Au and Pt using an in-situ analytical technique; 2) characterizing in-house produced reference materials of sedimentary rocks with ultra-low levels of Au and Pt; and 3) developing advanced bulk-rock digestion-based analytical techniques for determining ultra-low levels of Au and Pt, required for characterization of the reference materials produced. It will also include a comparative study of host sedimentary rocks from a variety of ore deposits with barren sedimentary rocks. A successful candidate would have an honours degree in either geochemistry with a strong analytical component or in inorganic analytical chemistry focused on applications of ICPMS and laser ablation. The project will be supervised by academics internationally recognised in the fields of LA-ICPMS and ore deposit geology.
|Contact:||Prof Leonid Danyushevsky