Polyurethane foam (PUF) disks passive air samplers: Wind effect on sampling rates

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• 作者：Ludovic Tuduri ; Tom Harner and Hayley Hung
• 关键词：Passive sampling ; Wind effect ; Sampling rate ; PCBs ; Atmosphere
• 刊名：Environmental Pollution
• 出版年：2006
• 期刊代码：28_02697491
• 类别：env
• 出版时间：November 2006
• 卷：144
• 期：2
• 页码：377-383
• 文件大小：348 K

摘要

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 4.5–14.6 m³ d⁻¹ and then increased sharply to 42 m³ d⁻¹ at 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.