Indicator-scale chemistry - Radiochemistry

This teaching unit covers the various aspects related to radiochemistry and indicator-scale chemistry. After having described the chemical properties of radioelements and discussed the scaling factors related to the use of radioelements/radionuclides at the indicator scale, the notions of microcomponent and macrocomponent will be discussed as well as the kinetic and thermodynamic consequences on the development of reactions. In a second step, the different radiochemical methods commonly used will be introduced: extraction and purification methods, use of radioactive cows, electro-deposition, syncrystallization or entrainment precipitation methods, isotopic labelling and dilution.

Hourly volumes* :

            CM : 12h

            TD : 8h

The objective of this teaching unit is, firstly, to describe the chemical properties of radioelements and then to approach the scaling factors related to the use of radioelements/radionuclides at the scale of indicators (notion of microcomponent and macrocomponent, kinetics and thermodynamics of reactions). In a second step, it will be necessary to master the different methods used in radiochemistry (extraction, purification, electrodeposition, syncrystallization, precipitation by entrainment, isotopic marking and dilution).

Basic elements in radioactivity

Solution chemistry applied to actinides

Continuous control

• Chemical properties of radioelements :
• Case of natural radioelements and consequences on the natural occurrence
• Chemical properties of technetium and promethium
• Chemical properties of transuranic elements
• Radiochemistry and indicator-scale chemistry:
• Definition of the scales
• Notion of microcomponent and macrocomponent. Consequences on the development of chemical reactions
• Reaction kinetics at the indicator level
• Thermodynamics of reactions: validity of mass action and equilibrium
• Isotope exchange reactions
• Radiochemical methods:
• Production of radionuclides with or without trainer
• Radioactive cows
• Purification: syncrystallization and entrainment precipitation methods
• Labeling and isotopic dilution
• Electrodépôt

The teaching will take place in the form of lectures and tutorials applied to cases from different fields of application of radiochemistry, geochemistry or metrology in environmental conditions. It can also be completed by bibliographic tutorials.

Administrative contact(s): Secretariat Master Chemistry

master-chimie @ umontpellier.fr (master-chimie @ umontpellier.fr)