研究了适用于安德森六级撞击式空气微生物采样器的采集效率评价方法,并搭建了评价系统。将不同粒径的单分散聚苯乙烯微球雾化形成气溶胶,使用空气动力学粒径谱仪分别对采样器上、下游的颗粒物数量浓度进行测量,测量出采样器各级的采集效率,从而计算出采集效率为50%时的空气动力学直径Da50。通过对国产某品牌的6级安德森空气微生物采样器进行评价,测得1~6级的Da50分别为7.2,6.7,4.7,2.9,1.5,0.8μm。
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.
关键词
计量学 /
安德森采样器 /
气溶胶 /
采集效率 /
空气动力学直径
Key words
metrology /
Anderson sampler /
aerosol /
acquisition efficiency /
aerodynamic diameter
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
［1］Zuo Y Y, Uspal W E, Wei T. Airborne Transmission of COVID-19: Aerosol Dispersion, Lung Deposition, and Virus-Receptor Interactions ［J］. ACS Nano, 2020, 14 (12): 16502.
［2］Chen B, Jia P, Han J. Role of indoor aerosols for COVID-19 viral transmission: a review ［J］. Environmental Chemistry Letters, 2021, 19 (5): 1-18.
［3］田莹, 张国城, 吴丹, 等. 生物气溶胶监测仪的校准方法比较 ［J］. 计量学报, 2022, 43 (1): 140-144.
Tian Y, Zhang G C, Wu D, et al. Comparison of Biological Calibration Methods of Bioaerosol Monitor ［J］. Acta Metrologica Sinica, 2022, 43 (1): 140-144.
［4］陈雪琴, 李姗, 张明顺, 等. 生物气溶胶研究进展 ［J］. 南京医科大学学报 (自然科学版), 2020, 40 (6): 783-787.
Chen X Q, Li S, Zhang M S, et al. Research progress of bioaerosols ［J］. Journal of Nanjing Medical University, 2020, 40 (6): 783-787.
［5］郑淑睿, 孔少飞, 严沁, 等. 华北南部冬季大气亚微米颗粒物数浓度变化 ［J］. 中国环境科学, 2019, 39 (11): 4511-4520.
Zheng S R, Kong S F, Yan Q, et al. Number concentration of submicron particles during winter at a suburban site of the south edge of North China ［J］. China Environmental Science, 2019, 39 (11): 4511-4520.
［6］Rissler J, Gudmundsson A, Nicklasson H, et al. Deposition efficiency of inhaled particles (15～5000 nm) related to breathing pattern and lung function: an experimental study in healthy children and adults ［J］. Particle and Fibre Toxicology, 2017, 14: 10.
［7］杨文慧, 温占波, 于龙, 等. 应用气溶胶发生法评价空气微生物采样器采样效率 ［J］. 中国消毒学杂志, 2009, 26 (3): 245-248.
Yang W H, Wen Z B, Yu L, et al. Valuation of the sampling efficiency of bioaerosol samplers by the aerosol generating method ［J］. Chinese Journal of Disinfection, 2009, 26 (3): 245-248.
［8］吴付祥, 陈建阁, 王静宇, 等. 采样器气体流量闭环控制研究 ［J］. 计量学报, 2017, 38 (1): 87-90.
Wu F X, Chen J G, Wang J Y, et al. Development of Dust Sampler Based Flow Closed-loop Control ［J］. Acta Metrologica Sinica, 2017, 38 (1): 87-90.
［9］方立德,王配配,王松,等. 长喉颈文丘里管气液两相流弹状流机理研究［J］.计量学报, 2020, 41(1): 48-54.
Fang L D,Wang P P,Wang S,et al. Study on Slug Flow Mechanism of Gas-liquid Two-phase Flow based on Long Throat Venturi Tube［J］. Acta Metrologica Sinica, 2020, 41(1): 48-54.
［10］陈拼. 微生物气溶胶采样器设计及其应用研究 ［D］.杭州: 浙江大学, 2018.
［11］Alvis G T, Neal F H. Calibration of the Anderson 2000 Disposable Air Sampler ［J］. American Industrial Hygiene Association Journal, 1975, 36 (6): 447-451.
［12］JJF 1826—2020空气微生物采样器校准规范 ［S］.
［13］刘佳琪, 张国城, 吴丹, 等. 基于静态箱法的PM2. 5切割器捕集效率评价及拟合曲线优化研究 ［J］. 计量学报, 2021, 42 (10): 1398-1403.
Liu J Q, Zhang G C, Wu D, et al. Study on Efficiency Evaluation and Curve Fitting Optimization of PM2. 5 Cyclone Based on Static Chamber Measuring Method ［J］. Acta Metrologica Sinica, 2021, 42 (10): 1398-1403.
［14］刘佳琪, 张国城, 吴丹, 等. 进气流量对PM2. 5切割器捕集效率的影响分析 ［J］. 计量学报, 2021, 42 (4): 532-536.
Liu J Q, Zhang G C, Wu D, et al. Analysis of the Influence of Air Inlet Flow Rate on the Capture Efficiency of PM2. 5 Cutter ［J］. Acta Metrologica Sinica, 2021, 42 (4): 532-536.
［15］Andersen A A. New sampler for the collection, sizing, and enumeration of viable airborne particles ［J］. Journal of Bacteriology, 1958,47 (6): 471-484.
［16］Hui W, Reinhard V, Pallavi B, et al. Design and pharmaceutical applications of a low-flow-rate single-nozzle impactor ［J］. International Journal of Pharmaceutics, 2017, 533 (1): 14-25.
［17］Peter T M, Vanderpool R W, Wiener R W. Design and Calibration of the EPA PM2. 5 Well Impactor Nine-Six (WINS) ［J］. Aerosol Science and Technology, 2001, 34 (5): 389-397.
［18］修宏宇, 崔伟群, 刘俊杰, 等. 采用蒙特卡洛法评定PM2. 5切割粒径的不确定度 ［J］. 计量技术, 2017(11): 3-7.
基金
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项目(2021MK003);中国博士后科学基金(2019M660538)
PDF(1760 KB)
