The main aim is to provide theoretical and practical knowledge on analytical methods for materials of natural and anthropogenic origin, with a particular focus on liquid and gas phases. Lab analysis of samples collected during fieldtrips will be carried out. Practice will be implemented by theory, aimed to provide information for the meaning and the correct use of the analytical data in relation with its nature and the aims of the geochemical investigations.
Power point presentations. Scientific papers published by international journals.
Learning Objectives
Theoretical knowledge on the main analytical methods used in geochemical laboratories. Practice (direct use) on analytical instruments. Evaluation of analytical data and applications.
Prerequisites
no
Teaching Methods
Power point presentations. Fieldtrips (Aeolian Islands, Mt. Amiata).
Further information
no
Type of Assessment
Oral exams
Course program
Introduction: aims and applications.
Sampling and analysis. Selection of the methods in relation with the aims of the investigation.
Liquid phase:
In situ measurements and materials for the sample collection for the lab analysis.
Ionic chromatography (IC and HPLC).
Analysis of minor elements (F, NH4): potentiometry, Azometina-H (B).
Isotopic analysis (18O, D, 34S).
*TDIC-CO2: isotopic equilibrium-disequilibrium.
Gas phase:
Extraction methods and analysis of dissolved gas phase.
Gaschromatographic analysis.
Sampling of high temperature fluids (volcanic and geothermal environment). Air sampling (including particulate). Gas-mass analysis: headspace, thermal desorber, purge & trap.
Reactive and soluble gas analysis.
Isotopic analysis (18O, D, 34S, 13C).
Solid phase:
ICP-AES
ICP-MS
IC*P-MS-LA
Analytical approach and aims:
Sensitivity
Accuracy
Analytical error
Evaluation of the quality of an analysis and correction