• Aucun résultat trouvé

Modeling the isotope signature of methane and dissolved inorganic carbon to unravel methanogenic and other fermentation pathways in boreal lake sediments.

N/A
N/A
Protected

Academic year: 2021

Partager "Modeling the isotope signature of methane and dissolved inorganic carbon to unravel methanogenic and other fermentation pathways in boreal lake sediments."

Copied!
1
0
0

Texte intégral

(1)

R

i

δ

13

4

δ

δ

François Clayer

1,3*

, Yves Gélinas

2,3

, André Tessier

1

& Charles Gobeil

1,3

MODELING THE ISOTOPE SIGNATURE OF METHANE AND DISSOLVED INORGANIC CARBON TO UNRAVEL

METHANOGENIC AND OTHER FERMENTATION PATHWAYS IN BOREAL LAKE SEDIMENTS

1Institut National de la Recherche Scientifique, Centre Eau Terre Environnement (INRS-ETE), Québec (Qc) Canada 2Department of Chemistry and Biochemistry, Concordia University, Montréal (Qc) Canada

3Geotop, Montréal (Qc) Canada

*Corresponding author: [email protected]

MATERIALS & METHODS

δ

Inverse modeling of concentration profiles

Modeling the δ

13

C profiles

δ

L. Bédard 0 2 4 6 8 10 W a te r d e p th ( m ) 0 5 10 15 20 25 [O2] in mg L-1 0 2 4 6 8 10 0 2 4 6 8 10

INTRODUCTION

δ

RESULTS & DISCUSSION

Rnet

R

i

α

i CxHyOz + (x+ν−z)H2O → 1/2(x−ν)CH3COOH + νCO2 + (y/2−z+2ν)H2

R

1

α

1 CH3COOH → CH4 + CO2

R

2

α

2 CO2 + 4H2 → CH4 + 2H2O

R

3

α

3 CH4 + 2Oxidants → CO2 + 2Reducers

R

4

α

4 CH2O + Oxidant → CO2 + Reducer

R

5

α

5 δ

1

[sol.] [sol.]w x φ DS αB Rsol. net f

3

2

Ri αi [...]reactant C i δ13 δ13 α

ACKNOWLEDGEMENTS

δ13

REFERENCES

CONCLUSION

− − − − − − − − − −

δ

13

α

Références

Documents relatifs

existentielle traverse notre expé- rience des mondes virtuels, et même des contacts sociaux que nous y nouons : si je suis reconnu par d'autres dans l'identité factice que je

We investigate the impacts of dynamic bandwidth allocation (DBA) in the uplink transmissions and assess the robustness of the mobile interface to packet jitter

(2016) compiled and examined historical data for δ 13 C-DIC collected from the North Atlantic Ocean over the years 1981 – 2014 and used “ crossover analysis ” (Tanhua et al. 2010)

[Recueil de messes, de litanies et de motets a une, deux et trois voix sans accompagnement de differents auteurs].. Manuscrit, deuxieme moitie du XVIII 6

La premiere tache consistait logiquement a etudier le fichier birman pour avoir une idee exacte du volume de travail que demandait la retroconversion, en temps et en

In this work, we use a single molecule technique (Atomic Force Microscopy) to visualize isolated mono-nucleosomes, to quantify the influence of histone

It is a characteristic of the boiling heat transfer process that, as attempts are made to exceed the burnout heat flux, the conditions at the heat transfer surface become

The two bold black lines represent marginal curves of declination and inclination of the obtained secular variation reference curve for Austria surrounded by their 95 per cent