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 Experiment Videos

Using sulfate-amended sediment slurry batch reactors to evaluate mercury methylation.

S M Harmon1, J K King, J B Gladden

  • 1Department of Environmental Health Sciences, University of South Carolina, Arnold School of Public Health, Columbia, South Carolina 29208, USA. micheleh@usca.edu

Archives of Environmental Contamination and Toxicology
|March 27, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Extracellular levels of glucose in the hippocampus and striatum during maze training for food or water reward in male rats.

Behavioural brain research·2021
Same author

Aging is not equal across memory systems.

Neurobiology of learning and memory·2020
Same author

Comparison of Selective Plating Media for Enumeration of Bacillus cereus in Foods.

Journal of food protection·2019
Same author

Media for Confirming Clostridium perfringens from Food and Feces.

Journal of food protection·2019
Same author

Note of a Gunshot Wound of the Abdomen.

Transactions. Edinburgh Obstetrical Society·2018
Same author

Attenuation in rats of impairments of memory by scopolamine, a muscarinic receptor antagonist, by mecamylamine, a nicotinic receptor antagonist.

Psychopharmacology·2015

Mercury methylation in wetlands is microbial. While sulfate additions didn't increase mercury methylation, they enhanced bacterial growth and sulfate reduction, significantly reducing dissolved copper. Further research is needed on optimal sulfate levels.

Area of Science:

  • Environmental Science
  • Microbiology
  • Environmental Chemistry

Background:

  • Methylmercury in fish poses a public health risk, primarily from dietary intake.
  • Mercury methylation is a microbial process, largely driven by sulfate-reducing bacteria.
  • Understanding factors influencing mercury methylation is crucial for risk assessment.

Purpose of the Study:

  • To investigate the influence of varying sulfate concentrations on mercury methylation in wetland soils.
  • To assess the impact of sulfate amendments on microbial growth and sulfate reduction.
  • To evaluate the effect of sulfate treatments on dissolved copper sequestration.

Main Methods:

  • Microbial slurry reactors containing wetland soil and inorganic mercury were used.

Related Experiment Videos

  • Sulfate amendments ranged from 25 to 500 mg/L above natural levels.
  • Anoxic conditions were maintained to support sulfate-reducing bacteria growth over 35 days.

    • Main Results:

    • Mercury methylation levels did not exceed the control group across different sulfate treatments.
    • Increased methylmercury concentrations correlated with bacterial growth and sulfate reduction.
    • A significant decrease in dissolved copper was observed, ranging from 72.7% to 99.7%.

    Conclusions:

    • Sulfate addition stimulates microbial activity and sulfate reduction, impacting mercury methylation dynamics.
    • High sulfate levels enhance copper sequestration but require careful management due to potential limitations.
    • Laboratory models provide insights but have limitations regarding sulfate depletion and excess.