1. College of Chemical Engineering and Technology, Taiyuan University of Technology,Taiyuan, Shanxi 030024, China
2. Environment Metrology Center,National Institute of Metrology, Beijing 100029, China
Abstract：To study the traceability technology of the number concentration of airborne particles in micrometer range, an inkjet aerosol generator (NIM-IJAG) is developed and its performance is verified. The particle size and number concentration of obtained solid particles by NIM-IJAG are closely related to the nozzle aperture, solute density, solution mass concentration, output parameters of electrical controller, clean air flow volume and other parameters. On the basis of accurately obtaining the droplet size, the effective control of the particle size of solid particles can be achieved by changing the solution concentration, the number concentration of solid particles could be effectively controlled by adjusting the voltage frequency applied on the nozzle. Through experimental verification, NIM-IJAG can produce 1~20μm monodisperse solid particle samples with number concentration in 0~30/cm3, which can trace to the national metrology standard.
Liu L, Zhang W J, Du S Y, et al. Seasonal variation characteristics and potential source contribution of sulfate, nitrate and ammonium in Beijing by using single particle aerosol mass spectrometry ［J］. Environmental Science, 2016, 37(5): 1609-1618.
Zhang L B, Yin L F, Li M J, et al. Study on particle size change of particulates during spring festival in Tianjin by single particle aerosol mass spectrometry ［J］. Tianjin Science & Technology, 2020, 47(4): 67-72.
Shi Y L, Wang Y, Wei L T, et al. Research on the performance of PM1 and PM2. 5 selectors and its test system ［J］. Environmental Monitoring in China, 2022, 38(6): 532-536.
Wang T, Liu W, Zhang M T, et al. Study on functions validation of test devices for separation performance of PM2. 5 seperators ［J］. Metrology Science and Technology, 2022, 66(1): 41-45.
Liu J Q, Zhang G C, Wu D, et al. Study on efficiency evaluation and curve fitting optimization of PM2. 5 particle separation device based on statice chamber method ［J］. Acta Metrologica Sinica, 2021, 42(10): 1398-1403.
Chen Feng, Ji Z L, Ba Q X, et al. Oil-mist coalescence performance and optimization of filters for air filtration ［J］. Journal of chemical engineering of Chinese universities, 2022, 36(1): 101-109.
Sun S J, Qi T Y, Xiao J, et al. Development and calibration of high accuracy aerosol electrometer ［J］. Metrology Science and Technology, 2021(2): 54-58.
［11］
Yli-Ojanper J, Sakurai H, Iida K, et al. Comparison of Three Particle Number Concentration Calibration Standards Through Calibration of a Single CPC in a Wide Particle Size Range［J］. Aerosol Science and Technology, 2012(11): 1163-1173.
［13］
Iida K, Sakurai H, Ehara K. Inkjet Aerosol Generator as Monodisperse Particle Number Standard［J］. Aerosol Science and Technology, 2013, 1527: 453-456.
［15］
Mitchell J P, Waters S. Improvements to the vibrating orifice aerosol generator (VOAG) for the production of methylene blue particles［J］. Journal of Aerosol Science, 1986, 17(3): 556-560.
Liu J Q, Zhang G C, Zhao X N, et al. The influence of air inlet flow rate on the capture efficiency of PM2. 5 cutter ［J］. Acta Metrologica Sinica, 2021, 42(4): 532-536.
［8］
杨晓平. 空气净化滤材过滤性能的实验研究［J］. 价值工程, 2017(29): 148-149.
Yang X P. Study on filtration performance of air cleaning materials ［J］. Value Engineering, 2017(29): 148-149.
［16］
ISO 21501-4: 2018, Determination of particle size distribution—Single particle light interaction methods — Part 4: Light scattering airborne particle counter for clean spaces［S］.
［17］
Vasilatou K, Waelchli C, Koust S, et al. Calibration of optical particle size spectrometers against a primary standard: Counting efficiency profile of the TSI Model 3330 OPS and Grimm 11-D monitor in the particle size range from 300nm to 10μm［J］. Journal of Aerosol Science, 2021, 157: 105818.
［19］
Vasilatou K, Wlchli C, Iida K, et al. Extending traceability in airborne particle size distribution measurements beyond 10μm: counting efficiency and unit-to-unit variability of four aerodynamic particle size spectrometers［J］. Aerosol Science and Technology, 2023, 57(1): 24-34.
［21］
Iida K, Sakurai H, Auderset K, et al. Using an inkjet aerosol generator to study particle bounce in optical particle counters［J］. Aerosol Science and Technology, 2021, 55: 1165-1182.
Kesavan J S, Bottiger J R, Schepers D R, et al. Comparison of Particle Number Counts Measured with an Ink Jet Aerosol Generator and an Aerodynamic Particle Sizer［J］. Aerosol Science and Technology, 2013(2): 219-227.
［14］
Iida K S H. Counting efficiency evaluation of optical particle counters in micrometer range by using an inkjet aerosol generator［J］. Aerosol Science and Technology: The Journal of the American Association for Aerosol Research, 2018, 52(10): 1156-1166.
Iida K, Sakurai H, Saito K, et al. Inkjet aerosol generator as monodisperse particle number standard［J］. Aerosol Science and Technology, 2014, 48: 789-802.
［18］
Vasilatou K, Dirscherl K, Iida K, et al. Calibration of optical particle counters: first comprehensive inter-comparison for particle sizes up to 5μm and number concentration up to 2cm-3［J］. Metrologia, 2020, 57: 1-10.
2023, Vol. 44 
