Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
Ferromagnetism01:31

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
The Early Endosome: Endocytosis of Transferrin01:28

The Early Endosome: Endocytosis of Transferrin

Essential proteins such as insulin or low-density lipoprotein (LDL) and micronutrients such as iron enter a eukaryotic cell through receptor-mediated endocytosis. Subsequently, the early endosomes fuse with the vesicles containing such receptor-ligand complexes and play a vital role in sorting the incoming ligands and receptors. While the ligands are either degraded inside the vesicle or released into the cytosol, their receptors are returned to the plasma membrane for further rounds of...
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dilute Regeneration-Driven Membrane Capacitive Deionization of Synthetic Seawater using Nanopatterned Membranes and Prussian Blue Analog Electrodes.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Subaerial oxidative uranium mobilization at the culmination of the Great Oxidation Event.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Dichloroethene reduction by Fe(II): role of transient Fe(II) phases.

Environmental science. Processes & impacts·2025
Same author

Effect of Impurities on the Redox Properties of Goethite.

Environmental science & technology·2025
Same author

Translatable reporting of energy demand and rates in electrochemical carbon capture.

iScience·2025
Same author

Redox Properties of Structural Fe in Clay Minerals: 4. Reinterpreting Redox Curves by Accounting for Electron Transfer and Structural Rearrangement Kinetics.

Environmental science & technology·2024

Related Experiment Video

Updated: May 22, 2026

Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection
15:03

Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection

Published on: June 16, 2020

Fe atom exchange between aqueous Fe2+ and magnetite.

Christopher A Gorski1, Robert M Handler, Brian L Beard

  • 1Environmental Chemistry, Swiss Federal Institute of Aquatic Science and Technology, Eawag, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland.

Environmental Science & Technology
|May 15, 2012
PubMed
Summary
This summary is machine-generated.

Iron atom exchange between aqueous Fe(2+) and magnetite is significant, occurring extensively within the mineral structure. This rapid exchange, unlike in goethite, suggests Fe atom diffusion is a key mechanism in magnetite reactions.

More Related Videos

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
10:23

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
10:45

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

Related Experiment Videos

Last Updated: May 22, 2026

Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection
15:03

Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection

Published on: June 16, 2020

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
10:23

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
10:45

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

Area of Science:

  • Geochemistry
  • Environmental Science
  • Materials Science

Background:

  • Magnetite (Fe(3)O(4)) reactions with aqueous Fe(2+) are crucial for contaminant reduction and biogeochemical cycling.
  • Previous studies show Fe(2+) incorporation into magnetite, but the extent of Fe atom exchange remains unclear.

Purpose of the Study:

  • To quantify the extent of Fe atom exchange between aqueous Fe(2+) and magnetite.
  • To investigate the mechanisms driving Fe atom exchange in magnetite.

Main Methods:

  • Reacting isotopically labeled magnetite with enriched aqueous Fe(2+).
  • Utilizing Mössbauer spectroscopy to analyze Fe site distribution.
  • Conducting exchange experiments with Co-ferrite to assess substitution effects.

Main Results:

  • Significant Fe atom exchange (54-71%) occurred, extending beyond the near-surface region.
  • No preferential exchange of octahedral or tetrahedral sites was observed.
  • Co substitution in Co-ferrite had minimal impact on the rate or extent of Fe atom exchange.

Conclusions:

  • Fe atom diffusion is a plausible mechanism for rapid Fe atom exchange in magnetite.
  • Unlike goethite, bulk electron conduction is not the rate-limiting step for Fe atom exchange in magnetite.
  • The findings advance understanding of iron oxide reactivity in environmental systems.