δ13C and δ18O in cellulose and wood

Vario PYRO cube - Isoprime PrecisION, Elementar^®

Instrument description:

PrecisION isoprime magnetic sector mass spectrometer (Elementar®) coupled to a vario PYRO cube high-temperature elemental analyser (Elementar®).

Principle of the analysis:

The solid samples (weighed in silver capsules) undergo pyrolysis at 1400°C. They are converted into CO gas. The sample gas is then introduced into the spectrometer source under helium flow and analysed against a standard commercial CO gas.

The gas molecules are ionised in the source, accelerated by an electric field and deflected according to their mass by a magnetic field. Three Faraday cages are placed at the outlet, allowing masses 28, 29 and 30 to be recovered.

δ¹³C and δ¹⁸O are determined simultaneously from the same sample with an accuracy of 0.15‰ for δ¹³C and 0.30‰ for δ¹⁸O (see Loader et al. 2014, for a description of the method: DOI: 10.1021/ac502557x).

Type of analysis performed on this instrument:

Stable carbon and oxygen isotopes ratios in cellulose and wood.

Fundings:

Projet : RIOCAS, IDF-DIM-MAP-2021-3-001

Contacts:

Monique Pierre : 01.69.08.31.20 / This email address is being protected from spambots. You need JavaScript enabled to view it.

Michel Stievenard : 01.69.08.71.70 / This email address is being protected from spambots. You need JavaScript enabled to view it.