TOF-COL
Start: 01/10/2022
International partnership outside Europe
Coordinators : Julien Bouchez, Marc Benedetti
Host institutions :
CNRS and IPGP
Partner institutions :
University of Arizona
Related teams :
External Envelopes Geochemistry, Biogeochemistry at the Antropocene of Elements and Emerging Contaminants
Related themes :
Earth System Science
The formation of nano-sized (between 1 nm and 1 µm) particles is one of the most under-constrained processes of soil formation, while their export by streams is still poorly-estimated. The TOF-COL project aims at closing this knowledge gap by leveraging two unique features respectively located at the University of Arizona (UA) and at the CNRS-affiliated research unit of Institut de Physique du Globe de Paris (IPGP). Water samples are regularly collected at the Lansdcape Evolution Observatory (LEO) of UA, an experimental hillslope providing unique constraints on the links between hydrology, soil formation, and element export. These samples are analyzed by Time of Flight mass spectrometry (ICP-ToF-MS) af the PARI platform IPGP to reveal the size distribution and chemical composition of the nanophases present within the hillslope and exported therefrom. This project will result in a breakthrough in our ability to quantify the role of nanophase formation and transport in critical zone dynamics.
