Laser Ablation-ICP-MS

The liquid sample is transformed into an aerosol by collision with a stream of argon. The formed aerosol is sent into a very high-temperature argon plasma sufficient to vaporize, dissociate, atomize, and ionize most elements. A Collision/Reaction Interface (CRI) allows us to eliminate isobaric or polyatomic interferences by adding a specific gas (H2, He). A differential vacuum system then accelerates the ions formed in the plasma, which will be directed toward the quadrupole mass filter. By applying variable voltages to it, the quadrupole allows for the separation of ions according to their mass-to-charge ratio (m/z). Once separated, the ions are detected and counted by an electron multiplier (EM).

Application:

Circulation and redistribution of elements in forest ecosystems thru an isotopic labeling approach.

Contact: 

• Equipment coordinator: Benoît POLLIER benoit.pollier@inrae.fr
• Unit coordinator: Bastien Gerard bastien.gerard@inrae.fr - Loïc LOUIS loic.louis@inrae.fr