Journal Pre-proofs Humic extracts of hydrochar and Amazonian Dark Earth: Molecular charac- teristics and effects on maize seed germination Lucas Raimundo Bento, Camila Almeida Melo, Odair Pastor Ferreira, Altair Benedito Moreira, Stéphane Mounier, Alessandro Piccolo, Riccardo Spaccini, Márcia Cristina Bisinoti PII: S0048-9697(19)34992-7 DOI: https://doi.org/10.1016/j.scitotenv.2019.135000 Reference: STOTEN 135000 To appear in: Science of the Total Environment Received Date: 19 August 2019 Revised Date: 14 October 2019 Accepted Date: 14 October 2019 Please cite this article as: L. Raimundo Bento, C. Almeida Melo, O. Pastor Ferreira, A. Benedito Moreira, S. Mounier, A. Piccolo, R. Spaccini, M. Cristina Bisinoti, Humic extracts of hydrochar and Amazonian Dark Earth: Molecular characteristics and effects on maize seed germination, Science of the Total Environment (2019), doi: https://doi.org/10.1016/j.scitotenv.2019.135000 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Elsevier B.V. All rights reserved.