Journal Pre-proof Mediated electrochemical analysis as emerging tool to unravel links between microbial redox cycling of natural organic matter and anoxic nitrogen cycling Shun Li, Andreas Kappler, Yongguan Zhu, Stefan B. Haderlein PII: S0012-8252(20)30327-5 DOI: https://doi.org/10.1016/j.earscirev.2020.103281 Reference: EARTH 103281 To appear in: Earth-Science Reviews Received date: 19 May 2020 Revised date: 6 July 2020 Accepted date: 7 July 2020 Please cite this article as: S. Li, A. Kappler, Y. Zhu, et al., Mediated electrochemical analysis as emerging tool to unravel links between microbial redox cycling of natural organic matter and anoxic nitrogen cycling, Earth-Science Reviews (2020), https://doi.org/ 10.1016/j.earscirev.2020.103281 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. © 2020 Published by Elsevier.