publication . Preprint . Other literature type . 2017

Fluctuation Analysis of Redox Potential to Distinguish Microbial Fe(II) Oxidation

Allison Enright; Grant Ferris;
  • Published: 31 Oct 2017
Abstract
<p>We developed a novel method for distinguishing abiotic and biological iron oxidation in liquid media using oxidation-reduction (redox) potential time series data. The instrument and processing algorithm were tested by immersing the tip of a Pt electrode with an Ag-AgCl reference electrode, into an active iron-oxidizing biofilm in a groundwater discharge zone, as well as in two abiotic systems: a killed sample and a chemical control from the same site. We used detrended fluctuation analysis to characterize average root-mean-square fluctuation behaviour, which was distinct in the live system. The calculated α value scaling exponents determined by detrended fluc...
Subjects
free text keywords: bepress|Physical Sciences and Mathematics, bepress|Physical Sciences and Mathematics|Earth Sciences, bepress|Physical Sciences and Mathematics|Earth Sciences|Biogeochemistry, bepress|Physical Sciences and Mathematics|Earth Sciences|Geochemistry, EarthArXiv|Physical Sciences and Mathematics, EarthArXiv|Physical Sciences and Mathematics|Earth Sciences, EarthArXiv|Physical Sciences and Mathematics|Earth Sciences|Biogeochemistry, EarthArXiv|Physical Sciences and Mathematics|Earth Sciences|Geochemistry, Physical Sciences and Mathematics, Earth Sciences, Geochemistry, Biogeochemistry
Funded by
NSERC
Project
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
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Amend, J.P. and Teske, A. (2005) Expanding frontiers in deep subsurface microbiology. Palaeogeography. Palaeoclimatology. Palaeoecology 219: 131-155. [OpenAIRE]

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