Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, Epiciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

How the polarity of the separation column may influence the characterization of compost organic matter by pyrolysis-GC/MS

Abstract : Characterizing the chemical composition of compost organic matter (OM) may help to understand short- and long-term effect of compost spreading on soils. Pyrolysis-GC/MS is a powerful tool to study compost OM. However, the choice of the chromatographic conditions may induce selectivity for some pyrolysis products. This study aimed at comparing the information given by two columns of contrasted polarities. A polar (wax) column was better suited to characterize pyrolysis products originating from less humified OM, such as polysaccharide, protein and lignin-derived products. Alkanoic acids were also better analyzed on this column. By contrast, the use of a non-polar column was more satisfactory to characterize the distribution of aliphatic structures producing alkanes and alkenes upon pyrolysis. This study suggested that a polar column should be the most useful to evaluate compost OM stability and fertilizing properties (N availability), whereas their potential use as organic amendments for long-term carbon storage in soils, requiring information on the most refractory aliphatic constituents, should be better evaluated with a non-polar column. Information on compost hydrophobicity, influencing soil structural stability, should require the combination of both columns.
Complete list of metadata
Contributor : Marie-France Dignac Connect in order to contact the contributor
Submitted on : Tuesday, May 22, 2007 - 11:29:58 AM
Last modification on : Thursday, March 17, 2022 - 10:08:36 AM

Links full text



Marie-France Dignac, Sabine Houot, S. Derenne. How the polarity of the separation column may influence the characterization of compost organic matter by pyrolysis-GC/MS. Journal of Analytical and Applied Pyrolysis, Elsevier, 2006, 75 (2), pp.128-139. ⟨10.1016/j.jaap.2005.05.001⟩. ⟨bioemco-00148335⟩



Record views