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Toward the Standardization of Biochar Analysis: The COST Action TD1107 Interlaboratory Comparison

AutorBachmann, Hans Jörg; Knicker, Heike ; Paneque Carmona, M. ; Rosa Arranz, José M. de la ; Zehetner, Franz
Palabras claveBiochar analysis
Biochar certification
Round-robin test
Interlaboratory test
Polycyclic aromatic hydrocarbons
Heavy metals
Fecha de publicación20-ene-2016
EditorAmerican Chemical Society
CitaciónJournal of Agricultural and Food Chemistry 64(2): 513–527 (2016)
ResumenBiochar 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.
Descripción15 páginas.-- 2 figuras.-- 1 tablas.-- 42 referencias.-- Supporting Information The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jafc.5b05055.-- Bachmann, Hans Jörg et al. (2016) Journal of Agricultural and Food Chemistry 64(2): 513–527
Versión del editorhttp://dx.doi.org/10.1021/acs.jafc.5b05055
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