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

Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

442
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
442
Nuclear Stability03:18

Nuclear Stability

19.3K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
19.3K
Strength and Heat of Hydration01:29

Strength and Heat of Hydration

291
The hydration of cement is an exothermic reaction in which heat is generated as cement hydrates. This heat of hydration is critical to cement's strength development. The rate at which this heat is generated affects the temperature rise, with a majority of the heat being released early in the hydration process, half within the first three days, and about 75% within the first week.
The heat of hydration for each cement compound is significant; for instance, tricalcium aluminate (C3A) and...
291
Complexation Equilibria: Overview01:23

Complexation Equilibria: Overview

764
Complexation reactions take place when dative or coordinate covalent bonds form between metal ions and ligands. The compounds formed in these reactions are called coordination compounds. The number of bonds formed between the metal ion and the ligands is called its coordination number. Generally, most metal ions in an aqueous solution are solvated by water molecules and thus exist as aqua complexes.
The equilibrium constant of the complexation reaction is represented as the formation constant...
764
Stability of Equilibrium Configuration01:23

Stability of Equilibrium Configuration

502
Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
502
Temperature Dependence on Reaction Rate02:55

Temperature Dependence on Reaction Rate

82.5K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
82.5K

You might also read

Related Articles

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

Sort by
Same author

Synthetic Training Enables Deployment on Raw Drone Data: An Attention-Based Framework for Detecting Orphan Wells.

Sensors (Basel, Switzerland)·2026
Same author

Evaluating Neutralizing Antibody Titers by Recombinant Feline Calicivirus with Heterologous Capsid Protein VP1.

Animals : an open access journal from MDPI·2026
Same author

Translational Barriers and Optimization Strategies for Remote Ischemic Conditioning to Enhance Stroke Cerebroprotection.

Biomolecules·2026
Same author

Ab initio molecular dynamics prediction and experimental validation of the 14:4 rare-earth oxide-phosphate structure.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Chicken disease detection and localization using multi-noise separation and acoustic recognition.

Poultry science·2026
Same author

TRIM7 Inhibits Rabies Virus Replication by Promoting K48-Linked Ubiquitination and Degradation of RABV-M.

Emerging microbes & infections·2026
Same journal

Exploring the photodynamical landscape of biomimetic lumichrome-ephedrine-class amine complexes across femtosecond to millisecond regimes.

Communications chemistry·2026
Same journal

Assessing crystallisation behaviour in molecular crystals through particle rugosities.

Communications chemistry·2026
Same journal

Machine-learning-assisted continuous flow synthesis of clonidine.

Communications chemistry·2026
Same journal

A combined computational and experimental approach to revisit the Butlerov reaction.

Communications chemistry·2026
Same journal

Structure and mechanism of inhibition of lysine demethylase 2A (KDM2A) by compound 183c.

Communications chemistry·2026
Same journal

Recyclable glass fiber-reinforced epoxy copper clad laminates for printed circuit board.

Communications chemistry·2026
See all related articles

Related Experiment Video

Updated: Aug 12, 2025

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
09:18

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

Published on: December 14, 2017

10.5K

Uranium carbonate complexes demonstrate drastic decrease in stability at elevated temperatures.

Alexander Kalintsev1,2, Artas Migdisov3, Christopher Alcorn1

  • 1Earth & Environmental Division, Los Alamos National Laboratory, Los Alamos, NM, USA.

Communications Chemistry
|January 25, 2023
PubMed
Summary
This summary is machine-generated.

High-temperature uranium transport is vital for nuclear waste disposal and ore formation. New research shows carbonate ligands are ineffective above 100°C, challenging existing models for uranium migration.

More Related Videos

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen
12:05

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen

Published on: February 21, 2019

8.1K
Methods for Analyzing the Impacts of Natural Uranium on In Vitro Osteoclastogenesis
09:51

Methods for Analyzing the Impacts of Natural Uranium on In Vitro Osteoclastogenesis

Published on: January 30, 2018

8.2K

Related Experiment Videos

Last Updated: Aug 12, 2025

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
09:18

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

Published on: December 14, 2017

10.5K
U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen
12:05

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen

Published on: February 21, 2019

8.1K
Methods for Analyzing the Impacts of Natural Uranium on In Vitro Osteoclastogenesis
09:51

Methods for Analyzing the Impacts of Natural Uranium on In Vitro Osteoclastogenesis

Published on: January 30, 2018

8.2K

Area of Science:

  • Geochemistry
  • Environmental Science
  • Nuclear Engineering

Background:

  • Understanding uranium transport in geological settings is critical for nuclear waste management and uranium ore deposit formation.
  • Carbonate complexation has been traditionally considered a primary mechanism for uranium transport in hydrothermal fluids.
  • Existing models often rely on data from ambient conditions, potentially overestimating carbonate's role at higher temperatures.

Purpose of the Study:

  • To experimentally evaluate the role of carbonate ligands in uranium transport at elevated temperatures (above 100°C).
  • To reassess the significance of carbonate complexation in hydrothermal uranium migration models.
  • To provide a more accurate understanding of uranium mobility in geological repositories and natural ore-forming systems.

Main Methods:

  • Experimental dissolution of uranium in carbonate-bearing fluids at temperatures exceeding 100°C.
  • Analysis of uranium speciation and solubility under high-temperature hydrothermal conditions.
  • Comparison of experimental results with existing uranium transport models.

Main Results:

  • Carbonate ligands were found to be nearly irrelevant for uranium transport at temperatures above 100°C.
  • The effectiveness of carbonate in facilitating uranium dissolution significantly decreases with increasing temperature.
  • Experimental data contradicts the long-held paradigm of carbonate as a critical uranium transporting ligand at high temperatures.

Conclusions:

  • The role of carbonate in uranium transport is negligible at temperatures relevant to deep geological repositories and many hydrothermal ore-forming environments.
  • Hydrothermal uranium transport models need re-evaluation to account for the diminished importance of carbonate complexation at elevated temperatures.
  • Alternative ligands or mechanisms must be considered for accurate uranium migration predictions in high-temperature geological systems.