A new, efficient, one-step method for the removal of organic matter from clay-containing sediments
- 1 December 1997
- journal article
- Published by Mineralogical Society in Clay Minerals
- Vol. 32 (4) , 557-563
- https://doi.org/10.1180/claymin.1997.032.4.06
Abstract
For the purpose of clay examination, a new one-step method for the removal of organic matter was developed using sodium peroxodisulphate combined with different buffers such as sodium hydrogen carbonate, disodium hydrogen phosphate and disodium tetraborate. From an early Cretaceous black shale from the Apennines with a high organic carbon content, the <2 µm clay fraction was separated and contained 10.9 wt% organic carbon. To prevent decomposition of the clay layers, the period of oxidation was short (25-60 min) and the pH was kept between 5 and 9.5. Up to 98% of carbon was removed by this method.Keywords
This publication has 9 references indexed in Scilit:
- Adsorption of Thiamin (Vitamin B1) on Soils and ClaysSoil Science Society of America Journal, 1994
- Sorptive preservation of labile organic matter in marine sedimentsNature, 1994
- Tone und TonmineralePublished by Springer Nature ,1993
- La pyrolyse Rock-Eval et ses applications. Première partie.Revue de l'Institut Français du Pétrole, 1985
- Le degagement du materiel mineral des tests d'Invertebres (Bivalves) par proteolyse enzymatique de la trame organiqueGeobios, 1981
- Middle and early cretaceous magnetic stratigraphy from the Cismon section, northern ItalyEarth and Planetary Science Letters, 1979
- A Natural Clay Organic Complex from Andalusian Black EarthClays and Clay Minerals, 1977
- Organic Acids as Agents of Chemical Weathering of Silicate MineralsNature Physical Science, 1972
- An Improved Pretreatment for Mineralogical analysis of Samples Containing Organic MatterClays and clay minerals (National Conference on Clays and Clay Minerals), 1961