光散射法颗粒物监测仪粒径识别检测装置的搭建及方法研究

doi:10.3969/j.issn.1000-1158.2021.03.21

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摘要设计并搭建了粒径识别法光散射粉尘仪检测装置,以柴田LD-5型光散射粉尘仪作为参考粉尘仪(TSP),采用不同粒径(0.6,2.0,2.3,2.5,2.7,3.0,3.2,3.4,3.7μm)的单分散聚苯乙烯小球对某台具有粒径识别功能的PM2.5传感器的粒径识别误差进行检测。如果传感器粒径识别功能是准确的,当粒径>2.5μm时,浓度值TSP=PM10>PM2.5=0。检测结果表明,该传感器在粒径>3μm时,PM2.5/PM10或PM2.5/TSP才显著下降,即其粒径识别点在3μm之后;同时还观察到PM2.5/PM10在3.7μm出现不降反升的现象。

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	吴丹
	张国城
	赵晓宁

关键词 ：计量学, 粒径识别, 光散射, PM2.5, 颗粒物传感器

Abstract：A particle size identification device for light scattering particles monitor was designed and built. The particle size identification error of a PM2.5 sensor with particle size recognition function was tested by using SHIBATA LD-5 light scattering particles monitor as a reference (TSP) with different size particles (0.6, 2.0, 2.3, 2.5, 2.7, 3.0, 3.2, 3.4, 3.7μm). If the particle size identification function of the sensor is accurate, the concentration value TSP=PM10>PM2.5=0 when the particle size is larger than 2.5μm. However, the results show that PM2.5/PM10 decreases significantly until the particle size is larger than 3μm, where the particle size identification is realized. However, the value of PM2.5/PM10 risesafter 3.7μm.

Key words： metrology particle size identification light scattering PM2.5 particle monitor

收稿日期: 2019-05-07 发布日期: 2021-03-23

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);国家质检总局科技计划(2015QK001);首都科技条件平台(科研)(Z181100009518012);中国计量测试学会第五届中国科协青年托举人才项目

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,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: 吴丹(1991-),女,四川乐山人,北京市计量检测科学研究院工程师,从事颗粒物气溶胶研究。Email: wud@bjjl.cn

引用本文:

吴丹,张国城,赵晓宁. 光散射法颗粒物监测仪粒径识别检测装置的搭建及方法研究[J]. 计量学报, 2021, 42(3): 388-394.
WU Dan,ZHANG Guo-cheng,ZHAO Xiao-ning. Research on Construction and Method of Particle Size Recognition and Detection Device for Light Scattering Particles Monitor. Acta Metrologica Sinica, 2021, 42(3): 388-394.

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