Analysis of Portable Impactor Performance for Enumeration of Viable Bioaerosols

Details

• Personal Author:
  Mainelis G ; Yao M
• Description:
  Portable impactors are increasingly being used to estimate concentration of bioaerosols in residential and occupational environments; however, little data are available about their performance. This study investigated the overall performances of the SMA MicroPortable, BioCulture, Microflow, Microbiological Air Sampler (MAS-100), Millipore Air Tester, SAS Super 180, and RCS High Flow portable microbial samplers when collecting bacteria and fungi both indoors and outdoors. The performance of these samplers was compared with that of the BioStage impactor. The Button Aerosol Sampler equipped with gelatin filter was also included in the study. Results showed that the sampling environment can have a statistically significant effect on sampler performance, most likely due to the differences in airborne microorganism composition and/or their size distribution. Data analysis using analysis of variance showed that the relative performance of all samplers (except the RCS High Flow and MAS-100) was statistically different (lower) compared with the BioStage. The MAS-100 also had statistically higher performance compared with other portable samplers except the RCS High Flow. The Millipore Air Tester and the SMA had the lowest performances. The relative performance of the impactors was described using a multiple linear regression model (R(2) = 0.83); the effects of the samplers' cutoff sizes and jet-to-plate distances as predictor variables were statistically significant. The data presented in this study will help field professionals in selecting bioaerosol samplers. The developed empirical formula describing the overall performance of bioaerosol impactors can assist in sampler design. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Air Pollution Air Pollution, Indoor Bacteria Dust Environmental Monitoring Fungi Microbiology Occupational Health Particulate Matter Respiratory System Safety

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• Keywords:
  Air-contamination Air-quality Air-samples Air-sampling Air-sampling-equipment Airborne-particles Bacterial-dusts Exposure-assessment Exposure-methods Inhalation-studies Microbial-test-systems Particle-aerodynamics Particulate-dust Particulate-sampling-methods Sampling Sampling-methods Statistical-analysis

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  New Jersey ; OSHA Region 2
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  4
• Issue:
  7
• NIOSHTIC Number:
  nn:20032462
• Citation:
  J Occup Environ Hyg 2007 Jul; 4(7):514-524
• Contact Point Address:
  Gediminas Mainelis, Department of Environmental Sciences, Rutgers, The State University of NewJersey, 14 College Farm Road, New Brunswick, NJ 08901-8551
• Email:
  mainelis@envsci.rutgers.edu
• Federal Fiscal Year:
  2007
• Performing Organization:
  Rutgers, The State University of New Jersey, New Brunswick
• Peer Reviewed:
  True
• Start Date:
  20040901
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20080831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2d17857195cb5646584fa6a90ef6c3291e80f45c540bbc19fdcad4c6443b2fe8b5e54f9bdf443f6e6120d7232c74c9c26f90c49c5c7ca688442c22ec755daff7
• Download URL:
  https://stacks.cdc.gov/view/cdc/186416/cdc_186416_DS1.pdf
• File Type:
  [PDF - 987.57 KB ]