内标法对PM2.5切割器快速评价方法的修正

刘佳琪; 张国城; 田莹; 吴丹; 沈上圯; 荆文杰; 屈晓虎; 张艳伟

doi:10.3969/j.issn.1000-1158.2023.04.24

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计量学报 ›› 2023, Vol. 44 ›› Issue (4) : 653-656. DOI: 10.3969/j.issn.1000-1158.2023.04.24

电离辐射、标准物质与生物计量

内标法对PM2.5切割器快速评价方法的修正

刘佳琪¹,张国城¹,田莹¹,吴丹¹,沈上圯¹,荆文杰¹,屈晓虎²,张艳伟²

作者信息 +

Modification of Rapid Evaluation Method for PM2.5 Cutter by Internal Calibration Method

LIU Jia-qi¹,ZHANG Guo-cheng¹,TIAN Ying¹,WU Dan¹,SHEN Shang-yi¹,JING Wen-jie¹,QU Xiao-hu²,ZHANG Yan-wei²

Author information +

文章历史 +

摘要

利用多分散颗粒物对PM2.5切割器的快速检测,可极大提高检测效率。在实践中,发现空气动力学粒径谱仪的粒径测量结果偶尔存在偏移(偏小)。为克服偏移的影响,提出在多分散粒子中加入单分散微球标准物质,通过微球粒径标准值对捕集效率曲线的偏移进行修正,对进口及国产的PM2.5切割器进行了评价研究,测量结果与单独使用8种粒径单分散微球评价结果基本一致。该方法既利用了空气动力学粒径谱仪方法在PM2.5切割器评价方法中的高效率,又有效避免偏移造成的影响,在空气动力学粒径谱仪的应用中具有提高测量可靠性的作用。

Abstract

The rapid detection of PM2.5 cutter by using polydisperse particles can greatly improve the detection efficiency. It was found that the particle size measurement results of aerodynamics particle size spectrometer are occasionally offset (small). In order to overcome the influence of drift, the reference material of monodisperse microspheres was proposed to be added into the polydisperse particles. The drift of the capture efficiency curve can be corrected by the standard value of the particle size. This method was used to evaluate imported and domestic PM2.5 cutters, and the evaluation results were compared with the evaluation results of eight kinds of particle size monodisperse microspheres. This method not only made use of the high efficiency of aerodynamic particle size spectrometer method in PM2.5 cutter evaluation, but also effectively avoided the influence caused by offset, which has the role of improving the measurement reliability in the application of aerodynamic particle size spectrometer.

导出引用

刘佳琪,张国城,田莹,吴丹,沈上圯,荆文杰,屈晓虎,张艳伟. 内标法对PM2.5切割器快速评价方法的修正[J]. 计量学报. 2023, 44(4): 653-656 https://doi.org/10.3969/j.issn.1000-1158.2023.04.24

LIU Jia-qi,ZHANG Guo-cheng,TIAN Ying,WU Dan,SHEN Shang-yi,JING Wen-jie,QU Xiao-hu,ZHANG Yan-wei. Modification of Rapid Evaluation Method for PM2.5 Cutter by Internal Calibration Method[J]. Acta Metrologica Sinica. 2023, 44(4): 653-656 https://doi.org/10.3969/j.issn.1000-1158.2023.04.24

中图分类号： TB99

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