Toward the Standardization of Biochar Analysis: The COST Action TD1107 Interlaboratory Comparison
Résumé
Biochar produced by pyrolysis of organic residues is increasingly used for soil amendment and many other
applications. However, analytical methods for its physical and chemical characterization are yet far from being specifically
adapted, optimized, and standardized. Therefore, COST Action TD1107 conducted an interlaboratory comparison in which 22
laboratories from 12 countries analyzed three different types of biochar for 38 physical−chemical parameters (macro- and
microelements, heavy metals, polycyclic aromatic hydrocarbons, pH, electrical conductivity, and specific surface area) with their
preferential methods. The data were evaluated in detail using professional interlaboratory testing software. Whereas
intralaboratory repeatability was generally good or at least acceptable, interlaboratory reproducibility was mostly not (20% <
mean reproducibility standard deviation < 460%). This paper contributes to better comparability of biochar data published
already and provides recommendations to improve and harmonize specific methods for biochar analysis in the future.
Domaines
Sciences du Vivant [q-bio]
Fichier principal
Bachmann et al. 2016 asap_{90B93F9B-466D-40D3-8C57-C385419A4FC3}.pdf (5.29 Mo)
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