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Development of a portable reference aerosol generator (PRAG) for calibration of particle mass concentration measurements
Particuology ( IF 3.5 ) Pub Date : 2017-10-16 , DOI: 10.1016/j.partic.2017.06.005
François Gaie-Levrel , Soleiman Bourrous , Tatiana Macé

The tapered element oscillating microbalance with filter dynamics measurement system (TEOM-FDMS) is an instrument commonly employed by the French air quality monitoring network. This instrument is currently calibrated with calibration weights traceable to SI but having value and mass differences between each of them that are not representative of real atmospheric particle mass measurements. Moreover, these calibration weights do not allow detection of any technical problems associated with either the TEOM-FDMS sampling system upstream of the mass measurement or the intrinsic TEOM-FDMS filtration system. Therefore, a calibration method was developed using a portable reference aerosol generator (PRAG) that produces known and stable particle mass concentrations over time. Here, we present the characterization of the PRAG system in terms of a reference range of particle masses between 30 ± 10 and 3456 ± 83 μg at three sampling times. Its coupling with the TEOM-FDMS and a global comparison between the defined reference range of particle masses and the measured masses obtained with each TEOM-FDMS implicated in this study are also presented.



中文翻译:

便携式参考气溶胶发生器(PRAG)的开发,用于校准颗粒质量浓度测量

带有过滤器动态测量系统(TEOM-FDMS)的锥形振动摆锤是法国空气质量监测网络常用的一种仪器。目前,该仪器已使用可追溯至SI的校准砝码进行校准,但校准砝码之间的值和质量差并不代表实际的大气颗粒质量测量结果。此外,这些校准砝码不允许检测与质量测量上游的TEOM-FDMS采样系统或固有的TEOM-FDMS过滤系统相关的任何技术问题。因此,使用便携式参考气溶胶发生器(PRAG)开发了一种校准方法,该校准器会随时间产生已知且稳定的颗粒质量浓度。这里,我们以三个采样时间的30±10到3456±83μg的颗粒质量参考范围来描述PRAG系统的特性。还介绍了它与TEOM-FDMS的耦合以及定义的颗粒质量参考范围与通过这项研究牵涉到的每个TEOM-FDMS获得的测量质量之间的全局比较。

更新日期:2017-10-16
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