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: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.4K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.4K
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

1.2K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.2K
Masking and Demasking Agents01:19

Masking and Demasking Agents

3.7K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
3.7K

You might also read

Related Articles

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

Sort by
Same author

CDK8 inhibition induces Mediator trapping and impairment of the EWSR1::FLI1 transcriptional program in Ewing sarcoma.

Cancer discovery·2026
Same author

Loss of heterozygosity exposes germline mutations in complex I and drives Warburg metabolism in oncocytic carcinoma of the thyroid.

Science advances·2026
Same author

Multiscale photoacoustic imaging of stroke in preclinical models and future directions toward clinical translation [Invited].

Biomedical optics express·2026
Same author

The gut microbiota directs vitamin A flux to regulate intestinal T cell development.

Cell host & microbe·2026
Same author

Cover crop incorporation maintains the methane oxidation potential and lowers methane emissions in plastic-film-mulched upland arable soils.

Journal of environmental management·2026
Same author

Oligonucleotide genetics for <i>Pseudomonas aeruginosa</i> enables high throughput hypomorph screening.

bioRxiv : the preprint server for biology·2026

Related Experiment Video

Updated: Feb 18, 2026

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability
09:27

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

Published on: April 22, 2016

18.2K

How Does Oyster Shell Immobilize Cadmium?

Hyun Ho Lee1, Sang Yoon Kim2, Vance N Owens3

  • 1Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang, 50463, South Korea.

Archives of Environmental Contamination and Toxicology
|November 24, 2017
PubMed
Summary

Oyster shell effectively immobilizes cadmium (Cd) in soil. Chemisorption, forming stable minerals, is identified as the primary mechanism for this cadmium immobilization.

More Related Videos

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
09:33

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

10.8K
Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

18.9K

Related Experiment Videos

Last Updated: Feb 18, 2026

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability
09:27

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

Published on: April 22, 2016

18.2K
An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
09:33

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

10.8K
Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

18.9K

Area of Science:

  • Environmental Science
  • Geochemistry
  • Materials Science

Background:

  • Cadmium (Cd) contamination poses environmental risks.
  • Oyster shell (OS) is a potential material for soil remediation.
  • The mechanism of Cd immobilization by OS requires elucidation.

Purpose of the Study:

  • To investigate the mechanism of cadmium immobilization by oyster shell.
  • To determine the effectiveness of oyster shell in remediating Cd-contaminated soils.

Main Methods:

  • Reacting oyster shell (OS) with varying concentrations of Cd solutions.
  • Analyzing Cd adsorption onto OS.
  • Utilizing X-ray diffraction (XRD) to identify mineral formation.

Main Results:

  • Cadmium adsorption increased with initial Cd concentration.
  • Formation of Ca$_{0.67}$Cd$_{0.33}$CO$_{3}$ crystalline structure observed.
  • Chemisorption identified as the dominant Cd immobilization mechanism, not CdCO$_{3}$ precipitation.

Conclusions:

  • Oyster shell is a viable bioadsorbent for immobilizing cadmium.
  • Chemisorption leading to stable mineral formation is the key mechanism.
  • OS offers a promising approach for remediating Cd-contaminated soils.