Theme 1: Development of analytical methodologies
Although radioactivity has been measured for more than a century, the advances in radiation protection and the tighter environmental standards constantly push for the development of new analytical tools. The tools developed are aimed at determining potential radioactive contamination in the environment or individuals with greater precision, efficiency, and speed. The radioecology laboratory research addresses these aspects.
Introduction
The group's main areas of research cover the areas of nuclear science as well as environmental and Analytical Chemistry. Our first goal is to develop new analytical tools that allow a better understanding of the chemical processes involved in the distribution of metals and radionuclides as well as their species in the environment (e.g., natural, industrial and urban) and in the biota. To do this, we use state-of-the-art radiometric and spectrometric instruments, combined with unique and specific sample preparation methods. The combination of all these analytical concepts allows us to better understand the impact of these (radio)elements on the environment and on humans.
Theme 2: Geochemistry of radioelements in the environment
Environmental geochemistry is the study of the chemical elements that make up the earth, namely air, water, and soil. The analysis of abundances, distributions and various natural processes (physical, chemical and biological) that influence the chemical form and mobility of elements is critical to understanding their interactions with biota and humans. In addition, in the case of several elements, geochemistry allows us to understand their origins, whether natural or anthropogenic.
Theme 3: “Nuclear Forensic”: CSI - Radiochemical
Increasingly, we are seeing the presence in the environment or illegal possession of nuclear or radioactive materials of unknown origin. When investigating these incidents, questions are asked about the intended use, origin and, if applicable, route taken by the materials detected. The laboratory works with federal agencies to develop tools for the identification of orphan sources.
Theme 4: New functionalized nanomaterials for the nuclear field
The development of new resins based on the principles of extraction chromatography have a major impact on the detection of radionuclides, particularly when detection must be made promptly. Currently, the majority of so-called extraction techniques, the addition of extractant to the stationary liquid phase is done by impregnation making some of the commercial resins hardly reusable. In addition, the leaching of the extractant and the stationary liquid phase seems to be accentuated when high pressures are applied (e.g., HPLC system). The development of new specific resins based on the grafting of functionalized groups onto mesoporous supports would make it possible to fill some of the shortcomings of commercial resins.