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Related Experiment Videos

Automatic mechanical alveolar gas sampler for multiple-sample collection in field.

K H Maret, J O Billups, R M Peters

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |May 1, 1984
    PubMed
    Summary

    A novel mechanical alveolar gas sampler, utilizing a revolver mechanism, successfully collected six individual expired gas samples. This device performed reliably even in extreme field conditions, such as on Mount Everest.

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    Area of Science:

    • Physiology
    • Biomedical Engineering
    • Environmental Science

    Background:

    • Accurate collection of alveolar gas samples is crucial for physiological and environmental research.
    • Existing methods may present challenges in terms of sample integrity and ease of use in diverse conditions.

    Purpose of the Study:

    • To describe a newly developed mechanical alveolar gas sampler.
    • To evaluate the performance and field applicability of this innovative sampling device.

    Main Methods:

    • A 0.91-kg mechanical sampler employing a revolver principle was designed.
    • The sampler collects 19-ml samples in pre-evacuated aluminum ampoules with spring-loaded valves.
    • A cartridge system with a lock-out mechanism allows for six sequential, individual sample collections.

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    Main Results:

    • The sampler successfully collected six individual expired gas samples.
    • The device demonstrated reliable operation in field conditions.
    • Successful alveolar gas sampling was achieved on the summit of Mount Everest.

    Conclusions:

    • The described mechanical alveolar gas sampler is effective for collecting multiple expired gas samples.
    • The device's robust design and performance make it suitable for challenging field research, including high-altitude environments.