The Lunar Airborne Dust Toxicity Assessment Group (LADTAG) is working to determine the permissible limits for exposure to lunar dust. This standard will guide the design of airlocks and ports for EVA, as well as the requirements for filtering and monitoring the atmosphere in habitable vehicles and other modules. Rodent toxicity testing will be done using the respirable fraction of actual lunar soils (particles with physical size of less than 2.5 micrometers). We are currently separating this fine material from the coarser material that comprises >95% of the mass of each soil sample. Sieving is not practical in this size range, so a new system was developed for this task. Collection and separation efficiencies are tracked as development and tests proceed. LADTAG's recommendation for permissible exposure limits will be delivered to the Constellation Program in 2010.


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    Titel :

    Extracting Respirable Particles from Lunar Regolith for Toxicology Studies


    Beteiligte:
    Cooper, B. L. (Autor:in) / McKay, D. S. (Autor:in) / Taylor, L. A. (Autor:in) / Kawamoto, H. (Autor:in) / Riofrio, L. M. (Autor:in) / Gonzalez, C. P. (Autor:in)

    Kongress:

    12th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments; and Fourth NASA/ARO/ASCE Workshop on Granular Materials in Lunar and Martian Exploration ; 2010 ; Honolulu, Hawaii, United States


    Erschienen in:

    Erscheinungsdatum :

    2010-03-11




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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