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

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• 作者：Hans J?rg Bachmann ; Thomas D. Bucheli ; Alba Dieguez-Alonso ; Daniele Fabbri ; Heike Knicker ; Hans-Peter Schmidt ; Axel Ulbricht ; Roland Becker ; Alessandro Buscaroli ; Diane Buerge ; Andrew Cross ; Dane Dickinson ; Akio Enders ; Valdemar I. Esteves ; Michael W. H. Evangelou ; Guido Fellet ; Kevin Friedrich ; Gabriel Gasco Guerrero ; Bruno Glaser ; Ulrich M. Hanke ; Kelly Hanley ; Isabel Hilber ; Dimitrios Kalderis ; Jens Leifeld ; Ondrej Masek ; Jan Mumme ; Marina Paneque Carmona ; Roberto Calvelo Pereira ; Frederic Rees ; Alessandro G. Rombolà ; José Maria de la Rosa ; Ruben Sakrabani ; Saran Sohi ; Gerhard Soja ; Massimo Valagussa ; Frank Verheijen ; Franz Zehetner
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2016
• 出版时间：January 20, 2016
• 年：2016
• 卷：64
• 期：2
• 页码：513-527
• 全文大小：1138K
• ISSN：1520-5118

文摘

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.