Institut des Sciences de la Terre d'Orléans (ISTO)

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Using a scraper to clean a sediment core taken from a sand filter. The aim is to remove surface sediment that may have been displaced when the core was opened and eliminate the small PVC or aluminium shavings dislodged when cutting the tube. This operation is essential to ensure the quality of the analyses to be performed later. The sand filter here is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and…

Découpe longitudinale d'une carotte sédimentaire prélevée dans une chambre à sable, avant son analyse à l'Institut des Sciences de la Terre d'Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré, atteint 17 m de…

The Orléans Institute of Earth Sciences building (ISTO).

Extracting a sample from a sand filter sediment core in preparation for the chromatographic analysis of its composition in terms of molecular biomarkers and organic pollutants. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely…

Extracting a sample from a sand filter sediment core in preparation for the chromatographic analysis of its composition in terms of molecular biomarkers and organic pollutants. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Taking notes on the characteristics of the sediment sequences in a core sample taken from the sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help…

Découpe longitudinale d'une carotte sédimentaire prélevée dans une chambre à sable, avant son analyse à l'Institut des Sciences de la Terre d'Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré, atteint 17 m de…

Transport de carottes sédimentaires depuis la carothèque de l’Institut des Sciences de la Terre d’Orléans (ISTO) jusqu’au laboratoire d’analyse. Ces carottes ont été prélevées dans la chambre à sable située sous le quai de la Madeleine, à Orléans. La chambre à sable est un équipement d’assainissement dans lequel 7 millions de m³ d’eaux usées et pluviales en provenance du nord de l’agglomération sont prétraitées chaque année, avant leur transfert vers les stations d’épuration. Ce bassin conique,…

Gas chromatographic analysis and mass spectrometry of biomarkers and organic pollutants found in samples extracted from a sediment core taken in a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Using a scraper to clean a sediment core taken from a sand filter. The aim is to remove surface sediment that may have been displaced when the core was opened and eliminate the small PVC or aluminium shavings dislodged when cutting the tube. This operation is essential to ensure the quality of the analyses to be performed later. The sand filter here is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and…

Découpe longitudinale d'une carotte sédimentaire prélevée dans une chambre à sable, avant son analyse à l'Institut des Sciences de la Terre d'Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré, atteint 17 m de…

Extracting a sample from a sand filter sediment core in preparation for the chromatographic analysis of its composition in terms of molecular biomarkers and organic pollutants. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely…

Organic extracts from a sediment core sample taken from a sand filter. The composition of these extracts in terms of molecular biomarkers and organic pollutants will then be subjected to chromatographic analysis. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Close up of a sediment core taken from the sand filter after being cut lengthwise. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. It filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year which is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers…

Examen visuel d'une carotte sédimentaire prélevée dans une chambre à sable, après sa découpe et avant son analyse, à l’Institut des Sciences de la Terre d’Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré,…

Préparation d’une carotte sédimentaire prélevée dans une chambre à sable, avant sa découpe pour analyse, à l'Institut des Sciences de la Terre d'Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré, atteint 17 m de…

The Orléans Institute of Earth Sciences building (ISTO).

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Weighing sediment samples from a sand filter core after drying and crushing. The molecular biomarkers and organic pollutants that these samples contain will be extracted by chromatography. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical basin is 17 m deep and is…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Using a scraper to clean a sediment core taken from a sand filter. The aim is to remove surface sediment that may have been displaced when the core was opened and eliminate the small PVC or aluminium shavings dislodged when cutting the tube. This operation is essential to ensure the quality of the analyses to be performed later. The sand filter here is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and…

Découpe longitudinale d'une carotte sédimentaire prélevée dans une chambre à sable, avant son analyse à l'Institut des Sciences de la Terre d'Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré, atteint 17 m de…

Separation of the different chemical fractions of core sample sediment extracts taken from a sand filter in preparation for the chromatographic analysis of their composition in terms of molecular biomarkers and organic pollutants. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants…

Carothèque de l’Institut des sciences de la Terre d’Orléans (ISTO) dans laquelle sont stockées des carottes des sédiments, notamment celles prélevées dans une chambre à sable. Dans cet équipement d’assainissement situé sous le quai de la Madeleine, à Orléans, 7 millions de m³ d’eaux usées et pluviales en provenance du nord de l’agglomération sont prétraitées chaque année, avant leur transfert vers les stations d’épuration. Ce bassin conique, entièrement enterré, atteint 17 m de profondeur. Les…

Organic extracts from a sediment core sample taken from a sand filter. The composition of these extracts in terms of molecular biomarkers and organic pollutants will then be subjected to chromatographic analysis. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…

Examen visuel d'une carotte sédimentaire prélevée dans une chambre à sable, après sa découpe et avant son analyse, à l’Institut des Sciences de la Terre d’Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré,…

Préparation d’une carotte sédimentaire prélevée dans une chambre à sable, avant sa découpe pour analyse, à l'Institut des Sciences de la Terre d'Orléans (ISTO). Cette chambre à sable est un équipement d'assainissement situé sous le quai de la Madeleine, à Orléans, dans lequel 7 millions de m³ d'eaux usées et pluviales en provenance du nord de l'agglomération sont prétraitées chaque année, avant leur transfert vers les stations d'épuration. Ce bassin conique, entièrement enterré, atteint 17 m de…

The Orléans Institute of Earth Sciences building (ISTO).

Extracting a sample from a sand filter sediment core in preparation for the chromatographic analysis of its composition in terms of molecular biomarkers and organic pollutants. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely…

Extracting a sample from a sand filter sediment core in preparation for the chromatographic analysis of its composition in terms of molecular biomarkers and organic pollutants. The sand filter is a water purification device located under the Quai de la Madeleine in Orléans. The device filters some 7 million cubic metres of wastewater and rainwater from the north of the city each year. The water is then channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely…

Sampling a sediment column in a core sample taken from a sand filter. Each year this water purification device located under the Quai de la Madeleine in Orléans filters some 7 million cubic metres of wastewater and rainwater from the north of the city which is subsequently channelled to treatment plants downstream. The conical basin is 17 m deep and is entirely buried underground. The sediment accumulated since the construction of the basin in 1942 will help researchers reconstitute more than…