A comparison of seven methods for analysis of carbon in soils

Comparison of seven analytical protocols used for carbon analysis in soils indicates differences that relate to mineralogy, carbon content, and analytical equipment design and operation. For routine analyses of surficial geological materials containing either inorganic or organic carbon forms, or both, an appropriate method is based on thermal decomposition and oxidation of the sample with carbon released as carbon dioxide analyzed by infrared spectrometry using a Leco CR-412 instrument. The procedure requires analyses of two sample splits. One split is subjected to high-temperature (1350 °C) combustion to determine its total carbon content. The second split is initially oxidized at low temperature (500 °C) to remove volatile and readily oxidized carbon forms (organic), after which the remaining carbon forms (inorganic) are then determined through high-temperature combustion and carbon dioxide analyses. 2001-E11 I. Girard and R.A. Klassen 1 CURRENT RESEARCH RECHERCHES EN COURS 2001 Article Article Titles Titres Purchase Information Information pour acheter