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Environmental pollution · Feb 2009
Sampling atmospheric pesticides with SPME: Laboratory developments and field study.
- Junxia Wang, Ludovic Tuduri, Maud Mercury, Maurice Millet, Olivier Briand, and Michel Montury.
- EPCA-Institut des Sciences Moléculaires, UMR 5255 CNRS-Université Bordeaux 1,ISM, Site universitaire, 24019 Périgueux Cedex, France.
- Environ. Pollut. 2009 Feb 1;157(2):365-70.
AbstractTo estimate the atmospheric exposure of the greenhouse workers to pesticides, solid phase microextraction (SPME) was used under non-equilibrium conditions. Using Fick's law of diffusion, the concentrations of pesticides in the greenhouse can be calculated using pre-determined sampling rates (SRs). Thus the sampling rates (SRs) of two modes of SPME in the lab and in the field were determined and compared. The SRs for six pesticides in the lab were 20.4-48.3 mL min(-1) for the exposed fiber and 0.166-0.929 mL min(-1) for the retracted fiber. In field sampling, two pesticides, dichlorvos and cyprodinil were detected with exposed SPME. SR with exposed SPME for dichlorvos in the field (32.4 mL min(-1)) was consistent with that in the lab (34.5 mL min(-1)). SR for dichlorvos in the field (32.4 mL min(-1)) was consistent with that in the lab (34.5 mL min(-1)). The trends of temporal concentration and the inhalation exposure were also obtained.
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