Sampling atmospheric pesticides with SPME: Laboratory developments and field study.
To 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.
Wang
Junxia
J
EPCA-Institut des Sciences Moléculaires, UMR 5255 CNRS-Université Bordeaux 1,ISM, Site universitaire, 24019 Périgueux Cedex, France.
Tuduri
Ludovic
L
Mercury
Maud
M
Millet
Maurice
M
Briand
Olivier
O
Montury
Michel
M
D000383:Agriculture; D000395:Air Pollutants, Occupational / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D006801:Humans; D019570:Inhalation Exposure; D008956:Models, Chemical; D010575:Pesticides / Q000032:analysis*; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000379:methods
D000395:Air Pollutants, Occupational; D010575:Pesticides