Polyurethane foam (PUF) disks passive air samplers: wind effect on sampling rates.
Different passive sampler housings were evaluated for their wind dampening ability and how this might translate to variability in sampler uptake rates. Polyurethane foam (PUF) disk samplers were used as the sampling medium and were exposed to a PCB-contaminated atmosphere in a wind tunnel. The effect of outside wind speed on PUF disk sampling rates was evaluated by exposing polyurethane foam (PUF) disks to a PCB-contaminated air stream in a wind tunnel over air velocities in the range 0 to 1.75 m s-1. PUF disk sampling rates increased gradually over the range 0-0.9 m s-1 at approximately 4.5-14.6 m3 d-1 and then increased sharply to approximately 42 m3 d-1 at approximately 1.75 m s-1 (sum of PCBs). The results indicate that for most field deployments the conventional 'flying saucer' housing adequately dampens the wind effect and will yield approximately time-weighted air concentrations.
Equipe Périgourdine de Chimie Appliquée, Laboratoire de Physico-toxicochimie des systèmes naturels, Université Bordeaux I, Site universitaire, 24019 Périgueux cedex, France. l.tuduri@epca.u-bordeaux1.fr
Ludovic
L
Tuduri
Tom
T
Harner
Hayley
H
Hung
D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D010573:Pesticide Residues / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis; D011140:Polyurethanes; D015203:Reproducibility of Results; D014919:Wind
D000393:Air Pollutants; D010573:Pesticide Residues; D011140:Polyurethanes; C028279:polyurethane foam; D011078:Polychlorinated Biphenyls