Rock Eval
The standard model of Rock-Eval 6 (Technologies Vinci, Rueil-Malmaison, France) uses pyrolysis in an inert atmosphere followed by oxidation, at intervals of temperature between 200°C and 850°C. Many types of information on the content and the nature of organic carbon (and mineral carbon) are obtained using pyrograms. The Rock-Eval apparatus is used to analyse various types of samples : rocks, sediments, soils, vegetation... etc.
Elemental analyzer using spectrophotometry![](/webdav/site/iste/shared/5.Laboratories/Sedimentary geochemistry/Sedimentary geochemistry 2.jpg)
Spectrophotometer PerkinElmer Lambda 25 used for elemental analysis of phosphorus (and iron) in sediments and soil samples.
Elemental analyzer using gaseous chromatography![](/webdav/site/iste/shared/5.Laboratories/Sedimentary geochemistry/Sedimentary geochemistry 3.jpg)
The Thermo Finnigan Flash EA 1112 analyzer enables elemental measurements of carbon, hydrogen, nitrogen and sulfur in sediments and soils. The samples are heated up to 900°C and the combustion products are extracted into a chromatographic column, in which they are converted into simpler components. The components are then measured by a thermal conductivity detector.