Response of bacterial bioreporters to surface-bound arsenic

C.M. van Genuchten, A. Finger, J. van der Meer, J. Peña

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingspeer-review


Previous work shows that the response of bacterial bioreporters to aqueous Arsenic (As) is altered by solution chemistry. However, the influence of solid phase Fe precipitates on the detection of As by these engineered microorganisms is not understood. In this study, we applied bacterial bioreporters to assess the bioavailability of As(V) bound to the surface of a suite of Fe(III) (oxyhydr)oxide minerals. We found that As(V) bound to the surface of crystalline goethite (As:Fe = 1 mol%) was not detected by the bioreporters. By contrast, substantial fractions of As(V) (35–50%) adsorbed to nanocrystalline two-line ferrihydrite (As:Fe = 1–6 mol%) were detected by the bacteria, which suggests that structural properties of the solid phase play a key role in the detection of surface-bound As(V) by bioreporters. Our findings stress the importance of preventing the oxidation of Fe(II), which is common in As-contaminated aquifers, to ensure accurate As measurements when applying bioreporters in the field.

Original languageEnglish
Title of host publicationArsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment (As2016)
EditorsProsun Bhattacharya, Gunnar Jacks, Jochen Bundschuh, Prosun Bhattacharya, Marie Vahter, Jerker Jarsjo, Jerker Jarsjo, Jurate Kumpiene, Arslan Ahmad, Charlotte Sparrenbom, Marinus Eric Donselaar, Jochen Bundschuh, Ravi Naidu, Ravi Naidu
PublisherCRC Press/Balkema
Number of pages5
ISBN (Electronic)978-131536413-1
ISBN (Print)978-113802941-5
Publication statusPublished - 2016
Externally publishedYes
Event6th International Congress on Arsenic in the Environment - Stockholm, Sweden
Duration: 19 Jun 201623 Jun 2016
Conference number: 6


Conference6th International Congress on Arsenic in the Environment
Abbreviated titleAS 2016

Programme Area

  • Programme Area 2: Water Resources


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