Piechocki-Minguy A, Plaisance H, Garcia-Fouqué S, Galloo J C, Guillermo R
Ecole des Mines de Douai, 941, rue Charles Bourseul, B.P. 838, 59508 DOUAI Cedex, France.
Environ Technol. 2003 Dec;24(12):1527-35. doi: 10.1080/09593330309385698.
This study explains the main characteristics of a new passive sampler which is able to give reliable nitrogen dioxide measurements for short time sampling. The sampling rate was found to be on average 0.89 cm3 s(-1) for indoor sampling and 1.00 cm3 s(-1) for outdoor sampling. The detection limit was evaluated at 11 microg m(-3) for a one-hour measurement. In field conditions, the passive sampler measurements were in agreement with those of the chemiluminescent NOx monitors. Measurement uncertainties were estimated at 34% and 38% for laboratory tests in conditions corresponding respectively to indoor and outdoor measurements and were evaluated at 28 to 37% depending on the nitrogen dioxide concentration for field experiments. The effects of various factors on the passive sampler were determined in an exposure chamber. The sampling rate of the retained sampler version was not significantly influenced by wind speeds superior to 0.3 m s(-1). A decrease of the uptake rate is observed for high nitrogen dioxide doses. The sampling rate increases linearly with temperature (2% per degree C). The relative humidity has only a weak effect.
本研究阐述了一种新型被动采样器的主要特性，该采样器能够在短时间采样时给出可靠的二氧化氮测量结果。室内采样的平均采样率为0.89立方厘米每秒，室外采样为1.00立方厘米每秒。一小时测量的检测限评估为11微克每立方米。在实际现场条件下，被动采样器的测量结果与化学发光氮氧化物监测仪的测量结果一致。实验室测试中，分别对应室内和室外测量条件下的测量不确定度估计为34%和38%，现场实验的测量不确定度根据二氧化氮浓度评估为28%至37%。在暴露舱中确定了各种因素对被动采样器的影响。风速高于0.3米每秒时，保留采样器版本的采样率不受显著影响。高二氧化氮剂量下观察到吸收速率降低。采样率随温度呈线性增加（每摄氏度2%）。相对湿度的影响较弱。
