混合粒径颗粒物对切割器评价结果的影响研究

doi:10.3969/j.issn.1000-1158.2022.12.25

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摘要依据标准选用8个不同粒径的标准聚苯乙烯小球分别进行PM2.5切割器的评价,检测周期长、流程复杂。采用多种粒径粒子进行混匀后雾化,形成多分散气溶胶再进行检测,可一次性获取切割器在几种粒径下的捕集效率。用两种方法评价比对了国内外两种切割器,结果表明Da50及几何标准偏差δg一致性较好,偏差不超过3%,但混合方法的测量时间较传统方法缩短了80%。研究成果为优化切割器评价流程提供了参考。

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	刘佳琪
	张国城
	吴丹
	杨振琪
	田莹
	荆文杰
	霍胜伟
	沈上圯

关键词 ：计量学, 切割器, 性能评价, 单分散颗粒物, 混合粒径颗粒物, 测量时间

Abstract：The performance evaluation of the cutter can be carried out according to the national standards, but the measurement of capture efficiency using 8 kinds of monodisperse particles with particle sizes is time-consuming and the process is complicated. To solve the aboved problem, the influence of mixed particle size on the evaluation of the cutter was studied. By mixing and atomizing the monodisperse particles with different particle sizes, the efficiency of the cutter under several particle sizes could be obtained at one time. By applying the mentioned method and the traditional method to the evaluation of domestic and imported cutters, and comparing the evaluation results, it can be seen that Da50 and the geometric standard deviation δg have good consistency, with the deviation not exceeding 3%, and the measurement time of the mentioned method is 80% shorter than that of the traditional method. The results of the study provide a reference for optimizing the evaluation process of cutter.

Key words： metrology cutters performance evaluation monodisperse particulate matter mixed sizes particulate matter measuring time

收稿日期: 2021-09-01 发布日期: 2022-12-28

PACS:

TB99

基金资助:国家质量基础的共性技术研究与应用国家重点研发计划(2017YFF0205504);国家市场监督管理总局科技计划(2021MK003);中国博士后科学基金面上资助(2019M660538)

通讯作者: 张国城(1980-),福建永春人,北京市计量检测科学研究院教授级高工,主要从事化学分析与环境监测仪器的计量检测研究。Email:zhanggc@bjjl.cn E-mail: zhanggc@bjjl.cn

作者简介: 刘佳琪(1990-),女,河北邯郸人,北京市计量检测科学研究院工程师,主要研究方向为颗粒物相关环境监测仪器。Email:liujq@bjjl.cn

引用本文:

刘佳琪,张国城,吴丹,杨振琪,田莹,荆文杰,霍胜伟,沈上圯. 混合粒径颗粒物对切割器评价结果的影响研究[J]. 计量学报, 2022, 43(12): 1677-1682.
LIU Jia-qi,ZHANG Guo-cheng,WU Dan, YANG Zhen-qi,TIAN Ying,JING Wen-jie,HUO Sheng-wei,SHEN Shang-yi. Study on the Influence of Mixed Size Particle on the Evaluation Result of Cutter. Acta Metrologica Sinica, 2022, 43(12): 1677-1682.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2022.12.25 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2022/V43/I12/1677

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