title: [Fractionation of hydrogen stable isotopes in the human body].
abstract: Fractionation of hydrogen stable isotopes was studied in 9 human subjects in a chamber with normal air pressure imitating a space cabin. Mass-spectrometry of isotopes in blood, urine, saliva, and potable water evidenced increases in the contents of heavy H isotope (deuterium) in the body liquids as compared with water. These results support one of the theories according to which the human organism eliminates heavy stable isotopes of biogenous chemical elements.
authors.forename: Iu E
authors.initials: IuE
authors.lastname: Siniak
authors.forename: A I
authors.initials: AI
authors.lastname: Grigor'ev
authors.forename: V M
authors.initials: VM
authors.lastname: Skuratov
authors.forename: S M
authors.initials: SM
authors.lastname: Ivanova
authors.forename: B G
authors.initials: BG
authors.lastname: Pokrovskiĭ
mesh_terms: D005591:Chemical Fractionation / Q000379:methods*; D017666:Deuterium Oxide / Q000032:analysis; D018504:Ecological Systems, Closed; D006257:Head / Q000502:physiology; D006801:Humans; D006859:Hydrogen / Q000032:analysis*; D018476:Hypokinesia / Q000503:physiopathology; D013058:Mass Spectrometry; D010103:Oxygen Isotopes / Q000032:analysis*; D012463:Saliva / Q000737:chemistry*; D013542:Sweat / Q000737:chemistry*; D013997:Time Factors; D018474:Weightlessness Simulation
chemical_list: D010103:Oxygen Isotopes; D006859:Hydrogen; D017666:Deuterium Oxide