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Related Concept Videos

Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

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Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
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Assessment of the Acute Inhalation Toxicity of Airborne Particles by Exposing Cultivated Human Lung Cells at the Air-Liquid Interface
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Comparison of two biological aerosol sampling methods.

N J Zimmerman, P C Reist, A G Turner

    Applied and Environmental Microbiology
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    The May sampler and Andersen sampler show comparable results for biological aerosol sampling, with the May sampler capturing 82% of Andersen counts. These samplers can complement each other in environmental monitoring programs.

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    Area of Science:

    • Environmental Science
    • Microbiology
    • Air Quality Monitoring

    Background:

    • Biological aerosol samplers are crucial for monitoring airborne microorganisms.
    • The Andersen two-stage microbial impactor is a widely accepted standard.
    • Evaluating alternative samplers like the May three-stage glass impinger is essential for improving sampling efficiency and data reliability.

    Purpose of the Study:

    • To compare the effectiveness and benefits of the May sampler against the Andersen sampler.
    • To assess the dependability of May sampler results in relation to Andersen sampler data.
    • To determine if the two samplers provide comparable data for biological aerosol monitoring.

    Main Methods:

    • Side-by-side air sampling was conducted during simulated wastewater spray irrigation events.
    • Samples were analyzed for Escherichia coli colony counts and air concentrations.
    • Statistical analysis, including linear regression, was used to compare data from both samplers after excluding overloaded Andersen counts.

    Main Results:

    • A good correlation (r2 = 0.84) was observed between the May and Andersen samplers.
    • The May sampler reported, on average, 82% of the microbial counts obtained by the Andersen sampler.
    • Despite quantitative differences, the samplers yielded comparable results for biological aerosol concentrations.

    Conclusions:

    • The May sampler is a viable alternative or complementary tool to the Andersen sampler for biological aerosol monitoring.
    • Both samplers can be effectively used together in a sampling program to enhance data collection.
    • The study validates the utility of the May sampler in environmental and public health applications involving airborne microbial assessment.