Related Experiment Video
Updated: Aug 5, 2026
07:28
Dry Powder and Nebulized Aerosol Inhalation of Pharmaceuticals Delivered to Mice Using a Nose-only Exposure System
Published on: April 6, 2017
A two-compartment exposure device for foliar uptake study
1Laboratory for Earth Surface Processes, College of Environmental Sciences, Peking University, Beijing, China.
Environmental Pollution (Barking, Essex : 1987)
|January 19, 2006
Summary
A new device measures plant uptake of polycyclic aromatic hydrocarbons (PAHs). Results show PAHs in the air directly transfer to plant leaves, not from the roots.
Area of Science:
- Environmental Science
- Plant Biology
- Toxicology
Background:
- Polycyclic aromatic hydrocarbons (PAHs) are environmental pollutants.
- Understanding plant uptake of PAHs is crucial for risk assessment.
Purpose of the Study:
- To design and validate a novel airtight device for studying foliar uptake of PAHs in plants.
- To investigate the uptake pathways of PAHs in maize, differentiating between aerial and root exposure.
Main Methods:
- Development of a two-chamber airtight exposure system separating aerial and root plant compartments.
- Exposure of maize plants to various PAH species using the designed device.
- Analysis of PAH concentrations in air, aerial tissues, and roots.
Main Results:
- A significant positive correlation was observed between ambient air concentrations of PAHs and their concentrations in plant aerial tissues.
- No influence of PAH spiking in the culture solution (root exposure) on leaf PAH concentrations was detected.
- The device effectively isolated aerial and root exposure, confirming foliar uptake as a primary route.
Conclusions:
- The developed device is effective for studying foliar PAH uptake.
- Plants primarily absorb PAHs from the atmosphere through their leaves.
- Root uptake from contaminated water does not significantly contribute to leaf PAH accumulation.
