Abstract Trace chemical contaminants generated by human metabolism is a major source of contamination in spacecraft crew module. In this research, types and generation rates of pollutants from human metabolism were determined in the Chinese diets. Expired air, skin gas, and sweat of 20 subjects were analyzed at different exercise states in a simulated module. The exercise states were designed according to the basic activities in the orbit of astronauts. Qualitative and quantitative analyses of contaminants generated by human metabolic were performed with gas chromatography/mass spectrometry, gas chromatography and UV spectrophotometer. Sixteen chemical compounds from metabolic sources were found. With the increase in physical load, the concentrations of chemical compounds from human skin and expired air correspondingly increased. The species and the offgassing rates of pollutants from human metabolism are different among the Chinese, Americans and the Russians due to differences in ethnicity and dietary customs. This research provides data to aid in the design, development and operation of China's long duration space mission.

    Highlights ► Chemical compounds from human metabolism were detected. ► Contaminants from human metabolism are a major source of contamination in spacecraft. ► Concentration of contaminants increases with the increase in physical load. ► Type and quantity of contaminants vary with ethnicity and dietary customs. ► Atmospheric quality of the spacecraft crew module can be predicted.


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    Titel :

    Experimental study on trace chemical contaminant generation rates of human metabolism in spacecraft crew module


    Beteiligte:
    Lihua, Guo (Autor:in) / Xinxing, He (Autor:in) / Guoxin, Xu (Autor:in) / Xin, Qi (Autor:in)

    Erschienen in:

    Acta Astronautica ; 81 , 1 ; 12-18


    Erscheinungsdatum :

    2012-06-11


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch