不同类型颗粒物切割器采样流量与切割粒径关系研究

doi:10.3969/j.issn.1000-1158.2023.09.22

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摘要利用静态箱法可探索美国BGI公司生产的多种旋风式切割器和国产撞击式切割器的采样流量(Q)对50%切割粒径(D50)的影响,结果表明任意一种类型的旋风式切割器,采样流量变化均会导致采集效率曲线平移,流量越大,D50越小。在同一个旋风式切割器中,通过改变流量可实现PM1.0、PM2.5和PM4.0等模式的切换,且采样流量与D50近似成反比,而对于撞击式切割器,D50的平方根与采样流量近似成反比。该研究可作为一种快速评估方法,根据实际流量快速估算其对应的D50,具有一定的应用价值。

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	田莹
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	潘一廷
	荆文杰

关键词 ：计量学;切割器;切割粒径;采样流量, 静态箱法

Abstract：The method of static box was used to explore the influence of sampling flow (Q) on the cut size D50 of particulate matter cutter,including a variety of cyclone cutters of BGI and an impaction-type cutter of Chinese brand.The results showed that no matter which type cyclone cutter,the changes of sampling flow resulted in translation of collection efficiency curve.And the greater the flow rate,the smaller D50.In addition, it was found that the PM1.0,PM2.5 and PM4.0 modes could be switched by changing the flow rate in the same whirlwind cutter,and the sampling flow rate was approximately inversely proportional to D50.For the impaction-type cutter,the square root of D50 was approximately inversely proportional to the sampling flow.It could be used as a rapid evaluation method to quickly estimate the corresponding D50 according to the actual flow rate,which has certain application value.

Key words： metrology particulate matter cutter cutting size sampling flow static box method

收稿日期: 2022-08-21 发布日期: 2023-09-21

PACS:

TB99

基金资助: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(2022M710443);北京市博士后科研活动经费;北京市朝阳区2021年度博士后科研活动经费

通讯作者: 张国城(1980-),男,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检测方面的研究。Email:zhanggc@bjjl.cn E-mail: zhanggc@bjjl.cn

作者简介: 田莹(1990-),女,河南焦作人,北京市计量检测科学研究院工程师,主要从事颗粒物相关环境监测仪器方面的研究。Email:tiany@bjjl.cn

引用本文:

田莹,张国城,刘佳琪,沈上圯,吴丹,潘一廷,荆文杰. 不同类型颗粒物切割器采样流量与切割粒径关系研究[J]. 计量学报, 2023, 44(9): 1467-1472.
TIAN Ying,ZHANG Guo-cheng,LIU Jia-qi,SHEN Shang-yi,WU Dan,PAN Yi-ting,JING Wen-jie. Study on the Relationship Between Sampling Flow Rate and Cut Size of Different Types of Particulate Matter Cutters. Acta Metrologica Sinica, 2023, 44(9): 1467-1472.

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