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Enhancing Bioaerosol Sampling by Andersen Impactors Using Mineral-Oil-Spread Agar Plate

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  • Zhenqiang Xu
  • Kai Wei
  • Yan Wu
  • Fangxia Shen
  • Qi Chen
  • Mingzhen Li
  • Maosheng Yao

Abstract

As a bioaerosol sampling standard, Andersen type impactor is widely used since its invention in 1950s, including the investigation of the anthrax attacks in the United States in 2001. However, its related problems such as impaction and desiccation stress as well as particle bounce have not been solved. Here, we improved its biological collection efficiencies by plating a mineral oil layer (100 µL) onto the agar plate. An Andersen six-stage sampler and a BioStage impactor were tested with mineral-oil-spread agar plates in collecting indoor and outdoor bacterial and fungal aerosols. The effects of sampling times (5, 10 and 20 min) were also studied using the BioStage impactor when sampling environmental bioaerosols as well as aerosolized Bacillus subtilis (G+) and Escherichia coli (G-). In addition, particle bounce reduction by mineral-oil-plate was also investigated using an optical particle counter (OPC). Experimental results revealed that use of mineral-oil-spread agar plate can substantially enhance culturable bioaerosol recoveries by Andersen type impactors (p-values

Suggested Citation

  • Zhenqiang Xu & Kai Wei & Yan Wu & Fangxia Shen & Qi Chen & Mingzhen Li & Maosheng Yao, 2013. "Enhancing Bioaerosol Sampling by Andersen Impactors Using Mineral-Oil-Spread Agar Plate," PLOS ONE, Public Library of Science, vol. 8(2), pages 1-10, February.
    • Handle: RePEc:plo:pone00:0056896
    DOI: 10.1371/journal.pone.0056896
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    Cited by:

    1. Wenxing Wang & Guoqi Dang & Imran Khan & Xiaobin Ye & Lei Liu & Ruqing Zhong & Liang Chen & Teng Ma & Hongfu Zhang, 2022. "Bacterial Community Characteristics Shaped by Artificial Environmental PM2.5 Control in Intensive Broiler Houses," IJERPH, MDPI, vol. 20(1), pages 1-16, December.

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