Master’s Programme in Geology and Geophysics is responsible for the course.
Compulsory course, Analytical methods course package.
The course is not available to students from other degree programmes.
B.Sc. In geology
The student will understand the working principles of Electron Probe MicroAnalyzer (EPMA) and Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICPMS) and learn the importance of careful and appropriate preparation of geological samples for microanalytical chemical analyses. EPMA involves qualitative and quantitative chemical measurements, imaging and documentation of the samples, and mineralogical application of the data. The student will know how to independently work with the EPMA instrument using pre-defined settings. The student understands the working principles of a LA-ICPMS instrument in geological applications, becomes familiar with laboratory practices, and can independently do the data reduction calculations. The student understands the limitation of both these methods and their complementary character and learns how the data from both these instruments is published in scientific article format.
The recommended time for completion is in the first year of MSc studies.
The course is offered every year in period IV.
The lectures contain the working principle of EPMA instrument (physico-chemical background of the method, sample preparation, generation of electron beam, electron interaction with matter, production of characteristic X-rays, detector systems and electron imaging, and data recalculation principles) and LA-ICPMS instruments (different mass spectrometer types and their applications in earth sciences, plasma production and atom ionization processes and possible problems caused by isobaric and polyatomic interferences, laser types and their influence on photon-matter interaction, as well as data reduction theory). The students are given samples (polished thick sections or epoxy mounts) that will be studied and scanned using optical microscope, studied using EPMA instrument for quantitative mineral analysis data, and combining both analytical methods by using LA-ICPMS to characterize the trace elemental composition of the corresponding mineral phases. Computer class practicals demonstrate the LA-ICPMS data reduction methods. With the aid of scientific literature available from corresponding data, the course results will be converted to a scientific article format. The students will also write an instrument theory review that will be evaluated.
Deer, W.A., Howie, R.A., Zussman, J. 1992. An Introduction to Rock-Forming Minerals. Reed, S.J.B. (1993) Electron Microprobe Analysis
Lectures, labs, article writing
The research article and instrument review will both be evaluated.
First half of the course includes 2*5hours practicals in Microbeam-Lab, the timing of practicals will be discussed and decided during the first lecture.
A scientific-article-shaped report from the results of the materials studied in the laboratory demonstrations, including a summary of the instrument theory.