Abstract：As an efficient single-stage Anderson impact sampler, the plankton sampler is easy to operate, small and portable, which is widely used in clean rooms of pharmaceutical factories, sanitation and epidemic prevention. At present, the collection efficiency of plankton sampler in the market lacks scientific and efficient evaluation method. An evaluation method based on aerodynamic particle size spectrometer was used to test the collection efficiency of two kinds of domestic plankton samplers. It was found that sampling flow rate, the height of agar and the distance between nozzle and plate would significantly affect the collection efficiency of phytoplankton sampler. The results show that under a fixed sampling flow rate, the closer the petri dish is to the sampling head, the better the collection efficiency.When the distance between petri dish and sampling head is fixed, the collection efficiency increases first and then decreases with the increase of sampling flow rate, and the collection efficiency is the best when the sampling flow rate is 80L/min. The larger the agar thickness, the higher the sampling efficiency. The study has reference significance for improving the structure design of the plankton sampler, improving the product quality, and helping to improve the accuracy and scientificity of the detection of the plankton sampler.
Lewis D. Superspreading drives the COVID pandemic-and could help to tame it［J］. Nature, 2021, 590: 544-546.
［1］
Douwes J, Thorne P, Pearce N, et al. Bioaerosol health effects and exposure assessment: progress and prospects［J］. The Annals of occupational hygiene, 2003, 47:187-200.
［4］
Fung F, Hughson W G. Health effects of indoor fungal bioaerosol exposure［J］. Applied Occupational and Environmental Hygiene, 2003, 18(7): 535-544.
［7］
Bulfone T C, Malekinejad M, Rutherford G W, et al. Outdoor transmission of SARS-CoV-2 and other respiratory viruses: a systematic review［J］. Journal of Infectious Diseases, 2021, 223: 550-61.
［9］
Wang C C, Prather K A, Sznitman J, et al.Airborne transmission of respiratory viruses［J］. Science, 2021, 373(6558): 1-12.
Zhang G C, D Y N. Discussion about some problems of the measurement of planktonic bacteria sampler［J］. Metrology Science and Technology, 2017(6): 48-50.
Liu J Q, Zhang G C, Wu D, et al. Study on the Detection Method of Sampling Physical Efficiency of Planktonic Sampler Based on Aerodynamics［J］. Acta Metrologica Sinica, 2022, 43(9): 1216-1219.
Liu J Q, Zhang G C, Wu D, et al. Research on the efficiency evaluation device and method of PM10 cutter［J］. Acta Scientiae Circumstantiae, 2021, 41(6): 2340-2346.
Liu J Q, Zhang G C, Zhao X N, 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.
Hinds W C. Aerosol Technology［M］. New York:John Wiley, 1982.
［19］
Marple V A, Willeke K. Impactor design［J］. Atmospheric Environment, 1976, 10(10): 891-896.
［20］
Wang H, Bhambri P, Ivey J, et al. Design and pharmaceutical applications of a low-flow-rate single-nozzle impactor［J］. International Journal of Pharmaceutics, 2017, 533(1): 14-25.
［22］
Zhen S, Li K, Yin L, et al. A comparison of the efficiencies of a portable BioStage impactor and a Reuter centrifugal sampler (RCS) High Flow for measuring airborne bacteria and fungi concentrations［J］. Journal of Aerosol Science, 2009, 40(6): 503-513.
［24］
Yao M, Mainelis G. Analysis of portable impactor performance for enumeration of viable bioaerosols［J］. Journal of Occupational and Environmental Hygiene, 2007, 4(7): 514-524.
［5］
Robbins C A, Swenson L J, Nealley M L, et al. Health effects of mycotoxins in indoor air: A critical review［J］. Applied Occupational and Environmental Hygiene, 2000, 15(10): 773-784.
［8］
Van Doremalen N, Bushmaker T, Morris D H, et al. Aerosol and surface stability of SARS-CoV-2 as compared with SARS-CoV-1［J］. New Engl J Med,2020, 382(16): 1564-67.
Zhang G C, Zhang Q N, Zhang J. Study on the principle and value tracing method of microbiologial air sampler［J］. Metrology Science and Technology, 2016(5):46-49.
Willeke K, Mcfeters J J. The influence of flow entry and collecting surface on the impaction efficiency of inertial impactors［J］. Journal of Colloid and Interface Science, 1975, 53(1): 121-127.
［21］
Whyte W, Green G, Albisu A. Collection efficiency and design of microbial air samplers［J］. Journal of Aerosol Science, 2007, 38: 97-110.
［23］
Stewart S L, Grinshpun S A, Willeke K, et al. Effect of impact stress on microbial recovery on an agar surface［J］. Applied and Environmental Microbiology, 1995, 61(4): 1232-1239.
［3］
Alwis K U, Mandryk J, Hocking A D. Exposure to biohazards in wood dust: Bacteria, fungi, endotoxins, and (1→3)-beta-d-glucans［J］. Applied Occupational and Environmental Hygiene, 1999, 14(9): 598-608.
Zhang G C. Calibration of plankton sampler calibration device［J］. Metrology Science and Technology, 2019(2): 40-42.
Bai Z P, Zhu T, Guo G H. An analysis of design parameters of impactor for particulate sampling［J］. Chinese Journal of Environmental Engineering, 2004(8): 79-82.
2023, Vol. 44 
