Analyzes of the concentration of major cations in solution
ThermoFischer Scientific Aquion
Ionic Chromatography for cation concentrations analysis (Li+, Na+, NH4+, K+, Rb+, Mg2+, Cs2+, Ca2+, Sr2+, Ba2+)
Instrument description
Ionic chromatography (ThermoFischer Scientific Aquion) measures the cation concentrations of solutions. The separation of cations can be done on different columns depending on the matrix and ions of interest.
Principle of analysis
A liquid sample (filtered) is introduced, from the autosampler, into an injection loop, then through a column separating the ions which arrive, one after the other, separated by the column, on a detection cell (here conductimetry). The concentration of the cations is determined in relation to a previously established calibration range.
See measurement principle here: http://spin.mines-stetienne.fr/sites/default/files/chromion.pdf
Analyses performed on the instrument
- Major cations (Li+, Na+, NH4+, K+, Rb+, Mg2+, Cs2+, Ca2+, Sr2+, Ba2+) between 0.005 and 100 ppm depending on the elements with an accuracy of +/- 5%, only on liquid solutions (filtered).
Contacts
Gaël Monvoisin : 01.69.15.71.74 / This email address is being protected from spambots. You need JavaScript enabled to view it.
Funding
Domain of Major Interest – Patrimonial and Ancient Materials (DIM MAP) (DIM MAP) : Year 2020.
Automatic system for CO2 graphitisation
GG (Gas Graphitisation) “made in” LSCE
Instrument description
Seven automatic and independent lines for the graphitization of CO2 originating mainly from the acid attack of carbonates. The graphite produced is then transformed into a target for 14C measurement on EchoMicadas
Principle of analysis
The CO2 is reduced to graphite using hydrogen and in the presence of iron powder serving as a catalyst and brought to 580°C
Contacts
Arnaud Dapoigny: 01.69.08.04.70 / This email address is being protected from spambots. You need JavaScript enabled to view it.