安德森六级撞击采样器采集效率评价方法研究

doi:10.3969/j.issn.1000-1158.2022.06.18

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Abstract The acquisition efficiency evaluation method suitable for Anderson air microorganism sampler was studied, and the evaluation system was established.The monodisperse polystyrene microspheres with different particle sizes were atomized to form aerosols, and the concentration of particles above and downstream of the sampler were measured utilizing aerodynamic particle size spectrometer.The collection efficiency at all levels of the sampler were measured, so as to calculate the aerodynamic diameter Da50 when the collection efficiency was 50%.According to the evaluation results of the domestic six-stage Anderson air microorganism sampler, the Da50 values of the 1st to 6th stage were 7.2,6.7,4.7,2.9,1.5,0.8μm, respectively.

Key words： metrology Anderson sampler aerosol acquisition efficiency aerodynamic diameter

Received: 05 February 2021 Published: 30 June 2022

PACS:

TB99

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.06.18 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I6/825

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