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 nonequilibrium thin-disc and batch equilibrium techniques to evaluate herbicide sorption.

M Cade Smith1, David R Shaw, Joseph H Massey

  • 1Department of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USA. csmith@pss.msstate.edu

Journal of Environmental Quality
|August 23, 2003
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

Indoor air quality during cooking and cleaning: a modelling case study in a residential kitchen evaluated with real-world reference instrument measurements.

Environmental science. Processes & impacts·2026
Same author

Mechanism Development and Evaluation of the Gas-Phase Photooxidation of Guaiacol: Insights from a Chamber Study.

ACS ES&T air·2026
Same author

Alternate wetting and drying irrigation and selected hybrid rice maintain high grain yield and further reduce soil trace gas fluxes in Arkansas.

Journal of environmental management·2026
Same author

Inequalities and indoor air pollution: a prospective observational study of particulate matter (PM<sub>2.5</sub>) levels in 309 UK homes from the Born in Bradford cohort study.

BMC public health·2025
Same author

The Impact of UVC Light on Indoor Air Chemistry: A Modeling Study.

Environmental science & technology·2025
Same author

The INGENIOUS project: towards understanding air pollution in homes.

Environmental science. Processes & impacts·2025

Nonequilibrium disc-flow techniques offer better insights into soil-pesticide interactions than traditional batch studies. This method accurately captures rapid herbicide sorption kinetics, crucial for environmental modeling.

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Agrochemicals

Background:

  • Traditional batch sorption studies may not fully capture the dynamic nature of soil-pesticide interactions.
  • Understanding herbicide sorption kinetics is vital for accurate environmental fate modeling and risk assessment.
  • Atrazine and imazaquin are widely used herbicides with varying soil interaction properties.

Purpose of the Study:

  • To compare the effectiveness of nonequilibrium disc-flow techniques versus traditional batch studies for assessing soil-herbicide interactions.
  • To investigate the sorption kinetics of atrazine and imazaquin in a Demopolis silt loam.
  • To evaluate the utility of the thin-disc flow method for capturing rapid sorption processes.

Main Methods:

  • Conducted batch kinetic and equilibrium experiments for atrazine and imazaquin.

Related Experiment Videos

  • Performed dual-label thin-disc flow experiments using the same herbicides and soil.
  • Analyzed sorption data using the Freundlich equation and compared partition coefficients.

    • Main Results:

    • Batch studies showed rapid and gradual sorption phases for both herbicides, with rapid phase completion within 5 minutes.
    • The thin-disc flow method accurately reflected the rapid sorption phase of atrazine, yielding a partition coefficient (1.54) close to the rapid-phase Freundlich K(f) value (1.38).
    • The thin-disc flow method did not detect imazaquin retention, suggesting limitations for this specific herbicide under tested conditions.

    Conclusions:

    • Nonequilibrium disc-flow techniques provide higher resolution for rapid sorption kinetics compared to batch methods.
    • The thin-disc flow method's dynamic partitioning data may offer more relevant parameters for environmental models than batch-derived coefficients.
    • Further research is needed to optimize the thin-disc flow method for herbicides with different sorption characteristics.