全部文献期刊会议图书|学者科研项目
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作者:Hélène Pauwels , Guillaume Wille ...
来源:[J].Journal of Hazardous Materials(IF 3.925), 2018, Vol.359, pp.47-55
摘要:Abstract(#br)Successive transport experiments of TiO 2 nanoparticles (NP) suspension through fractured hard-rock column were done in laboratory. A low ionic strength (IS) water (0.8–1.3 10 −3 M) at pH ∼4.5 was used, corresponding to the chemical composition of groundwat...
作者:Hélène Pauwels , Emmanuelle Pételet-Giraud ...
来源:[J].Science of the Total Environment(IF 3.258), 2018, Vol.619-620, pp.842-853
摘要:Abstract(#br)We investigate denitrification mechanisms through batch experiments using crushed rock and groundwater from a granitic aquifer subject to long term pumping (Ploemeur, France). Except for sterilized experiments, extensive denitrification reaction induces NO 3 decrease...
作者:... Jean-Raynald de Dreuzy , Hélène Pauwels , Olivier Bour
来源:[J].Science of the Total Environment(IF 3.258), 2018, Vol.619-620, pp.491-503
摘要:Abstract(#br)We investigated the mixing and dynamic of denitrification processes induced by long-term pumping in the crystalline aquifer of Ploemeur (Brittany, France). Hydrological and geochemical parameters have been continuously recorded over 15 boreholes in 5 km 2 on a 25-yea...
作者:Philippe Négrel , Hélène Pauwels , François Chabaux
来源:[J].Applied Geochemistry(IF 1.708), 2018, Vol.93, pp.102-112
摘要:Abstract(#br)Here, we report on Sr isotopes, from shallow and deep groundwater from catchments located on granite and schist around the world. This extensive approach of Sr isotope tracing, initiated in France on areas impacted by intensive agricultural activities, was enlar...
作者:Hélène Pauwels , Philippe Négrel ...
来源:[J].Journal of Hydrology(IF 2.964), 2015, Vol.525, pp.302-312
摘要:Summary(#br)Hydrochemical borehole-loggings with a submersible Idronaut Ocean Seven 302 multiparameter probe equipped of F- and NO 3 -ion-selective electrodes in combination with EC, pH and dissolved oxygen, were applied for characterizing fluoride (F) contamination in a cry...
作者:Hélène Pauwels , Eliot Chatton ...
来源:[J].Science of the Total Environment(IF 3.258), 2015, Vol.530-531, pp.411-429
摘要:Abstract(#br)In the coastal multilayer aquifer system of a highly urbanized southern city (Recife, Brazil), where groundwaters are affected by salinization, a multi-isotope approach (Sr, B, O, H) was used to investigate the sources and processes of salinization. The high div...
作者:Hélène Pauwels , Patrick Ollivier ...
来源:[J].Journal of Contaminant Hydrology(IF 2.885), 2015, Vol.179, pp.148-159
摘要:Abstract(#br)Water flow and TiO 2 nanoparticle (NP) transfer in a fractured hard-rock aquifer were studied in a tracer test experiment at a pilot site in Brittany, France. Results from the Br tracer test show that the schist aquifer can be represented by a two-layer medium compri...
作者:Hélène Pauwels , Philippe Davy ...
来源:[J].Scientific Reports(IF 2.927), 2015, Vol.5 (1), pp.18-33
摘要:Abstract(#br)Climate change is thought to have major effects on groundwater resources. There is however a limited knowledge of the impacts of past climate changes such as warm or glacial periods on groundwater although marine or glacial fluids may have circulated in basement...
作者:Hélène Pauwels , Virginie Ayraud-Vergnaud ...
来源:[J].Applied Geochemistry(IF 1.708), 2009, Vol.25 (1), pp.105-115
摘要:Abstract(#br)Stable SO 4 isotopes ( δ 34 S -SO4 and δ 18 O -SO4 ), and more occasionally δ 15 N -NO3 were studied in groundwater from seven hard-rock aquifer catchments. The sites are located in Brittany (France) and all are characterized by intensive agricultural activity. ...
作者:Hélène Pauwels , Jean-Claude Foucher , Wolfram Kloppmann
来源:[J].Chemical Geology(IF 3.154), 2000, Vol.168 (3), pp.307-324
摘要:Abstract(#br)Nitrate concentrations in groundwater close to the water table in the upper weathered zone of the Coët-Dan catchment (Brittany, France) reach 200 mg/l. With intensive agriculture covering 86.5% of the catchment area, the pollution results principally from the sp...

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