内标法对PM2.5切割器快速评价方法的修正

doi:10.3969/j.issn.1000-1158.2023.04.24

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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.

Key words： metrology PM2.5 cutter particle size of recognition internal calibration method polydisperse capture efficiency

Received: 06 September 2022 Published: 18 April 2023

PACS:

TB99

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	Articles by authors
	LIU Jia-qi
	ZHANG Guo-cheng
	TIAN Ying
	WU Dan
	SHEN Shang-yi
	JING Wen-jie
	QU Xiao-hu
	ZHANG Yan-wei

Cite this article:

LIU Jia-qi,ZHANG Guo-cheng,TIAN Ying, et al. Modification of Rapid Evaluation Method for PM2.5 Cutter by Internal Calibration Method[J]. Acta Metrologica Sinica, 2023, 44(4): 653-656.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.04.24 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I4/653

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