Concept
Matière organique
Publications associées (492)
Iron oxides semiconductors are efficients for solar water disinfection: A comparison with photo-Fenton processes at neutral pH
César Pulgarin, Andrzej Sienkiewicz, Michaël Bensimon, Cristina del Socorro Lonfat
The photocatalytic activities of four different commercially available iron (hydr)oxides semiconductors, i.e. hematite (alpha-Fe2O3), goethite (alpha-FeOOH), wustite (FeO) and magnetite (Fe3O4), were evaluated for bacteria inactivation at neutral pH in the ...
Elsevier2015High field broadband THz generation in organic materials
Organic salt crystals, e.g. DAST, OH1, and DSTMS, pumped by ultra-short infrared laser are efficient THz emitters. We review our latest results on the generation in organic crystals of THz single-cycle transients with field strength of 1.5 MV/cm. The energ ...
Taylor & Francis2015Analyte quantification with Comprehensive Two-Dimensional Gas Chromatography: Assessment of methods for baseline correction, peak delineation, and matrix effect elimination for real samples
Jeremy Samuel Arey, Jonas Gros, Saer Samanipour, Petros Dimitriou Christidis, Auréline Grange
Comprehensive two-dimensional gas chromatography (GC x GC) is used widely to separate and measure organic chemicals in complex mixtures. However, approaches to quantify analytes in real, complex samples have not been critically assessed. We quantified 7 PA ...
Elsevier2015Indirect effects of experimental warming on dissolved organic carbon content in subsurface peat
Alexandre Buttler, Luca Bragazza, Vincent Eric Jules Jassey
The peatland carbon store is threatened by climate change and is expected to provide positive feedback on air temperature. Most studies indicate that enhanced temperature and microbial activities result in a rise of dissolved organic carbon (DOC) as a cons ...
Springer Heidelberg2014Functional and Structural Responses of Hyporheic Biofilms to Varying Sources of Dissolved Organic Matter
Headwater streams are tightly connected with the terrestrial milieu from where they receive deliveries of organic matter often through the hyporheic zone, the transition between groundwater and streamwater. Dissolved organic matter (DOM) from terrestrial s ...
2014No evidence of aquatic priming effects in hyporheic zone microcosms
The priming effect refers to quantitative changes in microbial decomposition of recalcitrant organic matter upon addition of labile organic matter and is a phenomenon that mainly has been reported and debated in soil science. Recently, priming effects have ...
2014NanoSIMS analysis of organic carbon from the Tissint Martian meteorite: Evidence for the past existence of subsurface organic-bearing fluids on Mars
Philippe Gillet, Jing Yang, Lin Xu
Two petrographic settings of carbonaceous components, mainly filling open fractures and occasionally enclosed in shock-melt veins, were found in the recently fallen Tissint Martian meteorite. The presence in shock-melt veins and the deuterium enrichments ( ...
Wiley-Blackwell2014Climate change, vegetation dynamics and carbon cycling in peatlands: the role of vascular plants in CO2 sequestration
Konstantin Svetlozarov Gavazov, Robert Matthew Mills, Luca Bragazza, Bjorn Jozef Maria Robroek
The project VeganPeat is described in this poster. IN particular, the workpackage oncerning the quantification of 14C in soil respired CO2 to detect the role of vascular plant abundance in promoting the decomposition of old organic matter in two peatlands ...
2014Geochemical control on uranium(IV) mobility in a mining-impacted wetland
Rizlan Bernier-Latmani, Elena Suvorova Buffat, Alexandre Bagnoud, Yuheng Wang, Lydie Chesaux
Wetlands often act as sinks for uranium and other trace elements. Our previous work at a mining-impacted wetland in France showed that a labile noncrystalline U(IV) species consisting of U(IV) bound to Al-P-Fe-Si aggregates was predominant in the soil at l ...
2014Shedding Light on Living Cells
An overview of the optical methods available to modulate the cellular activity in cell cultures and biological tissues is presented, with a focus on the use of exogenous functional materials that absorb electromagnetic radiation and transduce it into a sec ...
Wiley-Blackwell2014