作者：刘佳琪1, 张国城1, 吴丹1, 田莹1, 沈上圯1, 李博雅1, 霍胜伟1, 屈晓虎2, 张艳伟2
作者单位：1. 北京市计量检测科学研究院/国家生态环境监测治理产品质量监督检验中心，北京 100029;
2. 河北先进环保产业创新中心有限公司，河北 石家庄 050035
关键词：pm2.5切割器;pm10切割器;捕集效率曲线;串联式切割器;粒径分布
摘要：
在环境监测中，为更好将不同粒径粒子分离开，会将不同切割粒径的切割器串联使用。目前串联式切割器缺乏评价标准或规范，该研究以模式最简单的串联pm10-pm2.5切割器为对象，研究串联pm10切割器对pm2.5捕集效率曲线的影响，并研究不同粒径分布的颗粒物对两个品牌的pm2.5切割器评价的影响，包括iso a1尘、da50分别为2.67 μm和7.73 μm的多分散聚苯乙烯微球。结果表明，pm2.5切割器的捕集效率曲线是切割器独立的计量特性，不受环境中颗粒物的粒径分布影响，也不受串联pm10切割器的影响。该结论对于串联式切割器或分级器的评价具有重要参考意义，推荐单级独立评价的方法。
research on evaluation of concatenated pm10-pm2.5 separator
liu jiaqi1, zhang guocheng1, wu dan1, tian ying1, shen shangyi1, li boya1, huo shengwei1, qu xiaohu2, zhang yanwei2
1. beijing institute of metrology/ national quality supervision and inspection center for ecological & environmental products, beijing 100029, china;
2. hebei advanced environmental protection industry innovation center co., ltd., shijiazhuang 050035, china
abstract: in environmental monitoring, in order to separate particles with different particle sizes, separators with different cutting diameters are used in series. at present, there is no evaluation standard or specification for concatenated separator. in this study, the concatenated pm10-pm2.5 cutter with the simplest mode is taken as the object to study the influence of pm10 cutter on pm2.5 collection efficiency, and the particles with different particle size distributions are studied, including iso a1 dust and polystyrene microspheres with da50 of 2.67 μm and 7.73 μm, respectively. the two brands of pm2.5 cutters were evaluated differently. the results showed that the trapping efficiency curve of pm2.5 cutter is an independent measurement characteristic of a certain cutter, which is not affected by the particle size distribution in the evaluation method, nor by whether the pm10 cutter is connected in series. the conclusion has important reference significance for the evaluation of concatenated separator, and the single-stage independent evaluation method is recommended.
keywords: pm2.5 separator;pm10 separator;trapping efficiency curve;concatenated separator;particle size distribution
2024, 50(8):125-129 收稿日期: 2023-06-08;收到修改稿日期: 2023-11-16
基金项目: 国家市场监督管理总局科技计划项目（2021mk003）；中央引导地方科技发展资金项目（科技成果转移转化项目）（226z3901g）
作者简介: 刘佳琪（1990-），女，河北邯郸市人，副高级工程师，博士，主要从事颗粒物相关环境监测仪器研究。
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