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Published on: August 3, 2016
Sampling atmospheric pesticides with SPME: Laboratory developments and field study
Junxia Wang1, Ludovic Tuduri, Maud Mercury
1EPCA-Institut des Sciences Moléculaires, UMR 5255 CNRS-Université Bordeaux 1,ISM, Site universitaire, 24019 Périgueux Cedex, France.
Environmental Pollution (Barking, Essex : 1987)
|November 18, 2008
Summary
Greenhouse workers
Area of Science:
- Environmental Science
- Analytical Chemistry
- Occupational Health
Background:
- Greenhouse workers face potential pesticide exposure.
- Accurate monitoring of airborne pesticide concentrations is crucial for assessing inhalation risks.
Purpose of the Study:
- To estimate atmospheric pesticide exposure for greenhouse workers.
- To determine and compare sampling rates (SRs) for solid phase microextraction (SPME) under laboratory and field conditions.
Main Methods:
- Solid phase microextraction (SPME) was employed under non-equilibrium conditions.
- Fick's law of diffusion was used to calculate pesticide concentrations.
- Sampling rates (SRs) were determined for exposed and retracted SPME fibers in both lab and field settings.
Main Results:
- Laboratory SRs for six pesticides ranged from 20.4-48.3 mL min(-1) (exposed fiber) and 0.166-0.929 mL min(-1) (retracted fiber).
- Dichlorvos and cyprodinil were detected in field samples using exposed SPME.
- Field SR for dichlorvos (32.4 mL min(-1)) closely matched the laboratory value (34.5 mL min(-1)).
Conclusions:
- SPME is a viable method for assessing pesticide exposure in greenhouses.
- The determined sampling rates allow for accurate calculation of atmospheric pesticide concentrations.
- Temporal concentration trends and inhalation exposure patterns can be effectively monitored.
