John Reinfelder

About

John Reinfelder is a Professor in the Department of Environmental Sciences at Rutgers, the State University of New Jersey. His research focuses on aquatic biogeochemistry, phytoplankton physiology and ecology, mercury stable isotopes, sulfur geochemistry, acid mine drainage, and trace element accumulation in rice. He is involved in several current projects including the regulation of diatom physiology and stoichiometry by temperature, microbially catalyzed cycling of iron and other trace elements in soil, mercury cycling and bioaccumulation in the West Antarctic Peninsula's coastal marine ecosystem, and the accumulation of cadmium and other trace elements in rice. These projects often involve collaborations with researchers from institutions such as the Guangdong Institute of Eco-Environmental and Soil Sciences, Virginia Institute of Marine Sciences, and Polar Oceans Research Group. Professor Reinfelder's past research has addressed topics such as the regulation of diatom physiology and stoichiometry by CO2, carbon fixation in marine diatoms, biogeochemistry of arsenic in the Newark Basin, geomicrobiology of acid-mine drainage-contaminated soils, estuarine phytoplankton and organic carbon dynamics, and mercury stable isotopes in marine food webs. His work integrates field studies and laboratory investigations to understand elemental cycling and ecological processes in aquatic environments. He has collaborated with scientists from various universities including South China…

Research topics

• Chemistry
• Environmental chemistry
• Photochemistry
• Biology
• Environmental science
• Atmospheric sciences
• Meteorology
• Oceanography
• Geology
• Organic chemistry

Selected publications

• Extracellular Electron Shuttling Mediated by Soluble <i>c</i>-Type Cytochromes Produced by <i>Shewanella oneidensis</i> MR-1

  Environmental Science & Technology · 2020 · 132 citations

  -Cyts produced by MR-1 likely play a role in extracellular electron transfer under electron acceptor-limited conditions. These findings provide new insights into extracellular electron shuttling and the metabolic strategy of metal-reducing bacteria under electron acceptor-limited conditions.

  DOI

• Mercury Isotope Fractionation during the Photochemical Reduction of Hg(II) Coordinated with Organic Ligands

  The Journal of Physical Chemistry A · 2020 · 85 citations

  Senior authorCorresponding

  The photochemical reduction of Hg(II) is an important pathway in the environmental Hg cycle because it competes with Hg methylation and potentially limits the formation of bioaccumulative methylmercury. Hg stable isotope systematics have proven to be an effective tool for investigating the transport, transformation, and bioaccumulation of Hg. The dominant cause of mass independent isotope fractionation (MIF) of Hg in nature is the photochemical reduction of various species of Hg(II). However, it…

  DOI

• Reduction of acid mine drainage by passivation of pyrite surfaces: A review

  The Science of The Total Environment · 2022 · 79 citations

  Senior authorCorresponding
  PublisherDOI

• A New Electron Shuttling Pathway Mediated by Lipophilic Phenoxazine via the Interaction with Periplasmic and Inner Membrane Proteins of <i>Shewanella oneidensis</i> MR-1

  Environmental Science & Technology · 2023-01-18 · 52 citations

  article

  Although it has been established that electron mediators substantially promote extracellular electron transfer (EET), electron shuttling pathways are not fully understood. Here, a new electron shuttling pathway was found in the EET process by Shewanella oneidensis MR-1 with resazurin, a lipophilic electron mediator. With resazurin, the genes encoding outer-membrane cytochromes (mtrCBA and omcA) were downregulated. Although cytochrome deletion substantially reduced biocurrent generation to 1–12%…

  PublisherDOI

• Production of methylmercury by methanogens in mercury contaminated estuarine sediments

  FEMS Microbiology Letters · 2020 · 25 citations

  Anaerobic bacteria are known to produce neurotoxic methylmercury [MeHg] when elemental mercury [Hg(0)] is provided as the sole mercury source. In this study, we examined the formation of MeHg in anaerobic incubations of sediment collected from the San Jacinto River estuary (Texas, USA) amended with aqueous Hg(0) to investigate the microbial communities involved in the conversion of Hg(0) to MeHg. The results show that the addition of the methanogen inhibitor 2-bromoethanesulfonate (BES) signific…

  PublisherOA PDFDOI

Recent grants

• ETBC: COLLABORATIVE RESEARCH: MASS-DEPENDENT AND INDEPENDENT MERCURY ISOTOPE FRACTIONATION DURING MICROBIAL METHYLATION AND REDOX TRANSFORMATIONS OF MERCURY IN NATURAL WATERS

  NSF · $398k · 2010–2014

• Microbial Controls on the Mobilization and Speciation of Arsenic from Newark Basin Shale

  NSF · $445k · 2004–2009

• Collaborative Research: Transformations and mercury isotopic fractionation of methylmercury by marine phytoplankton

  NSF · $230k · 2016–2019

Frequent coauthors

• Steven J. Eisenreich

  32 shared

• Robert Miskewitz

  19 shared

• Richard I. Hires

  18 shared

• W. Scott Douglas

  New Jersey Department of Transportation

  17 shared

• Zhi Dang

  South China University of Technology

  17 shared

• Lisa A. Totten

  Delaware River Basin Commission

  17 shared

• Tamar Barkay

  Rutgers, The State University of New Jersey

  17 shared

• Sandra M. Goodrow

  New Jersey Department of Environmental Protection

  17 shared

Labs

• Reinfelder RV Oceanus, New York BightPI

Education

• Ph.D. Oceanography

  Stony Brook University

  1993

• B.A. Biology

  Johns Hopkins University

  1987

Similar researchers at Rutgers University

• Anthony Broccolih-47
• Enrique Curchitserh-44
• Gediminas Mainelish-44