Deuterium-depleted water

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Deuterium-depleted water (DDW), also known more ambiguously as light water,[1] is water which has a lower concentration of deuterium than occurs naturally. Deuterium a heavier isotope of hydrogen which has, in addition to its one proton, a neutron, that roughly doubles the mass of the hydrogen atom.

In Vienna Standard Mean Ocean Water, deuterium occurs at a rate of 155.76 ppm. The production of heavy water involves isolating and removing deuterium within water. The by-product of this process is light water. Production of light water can result during electrolysis, distillation, and desalination. Filtration through special membranes and crystallization are also considered preparation methods.[2] It can also be produced directly using the Girdler sulfide process.[1]

Research[edit]

Experiments have looked at drinking light water in addition to chemotherapy in cancer. Research on the effects of deuterium-depletion on living cells has been very limited with less than a dozen peer-reviewed research papers available via PubMed in mid-2011.[3]

Depleted water (125 ppm deuterium corresponds to the deuterium:protium ratio D:H=1:7695) at a consumption as high as 2 litres per day can influence the deuterium concentration in human body (average 40 litres with deuterium:protium ratio about D:H = 1:6418) for less than 1% (decreasing the normal ratio to D:H = 1:6472). A 1963 American paper is reported to infer that no biological effect should be expected at this level.[4]

See also[edit]

References[edit]

  1. ^ a b Boyle, Rebecca (6 Jan 2011). "With New Method, China Can Mass-Produce Light Water For Its Citizens' Thirst". Popular Science. Retrieved 7 Jan 2011. 
  2. ^ M.G. Barishev, S.S. Dzhimak (February 2013). "International Journal of Engineering Research and Applications (IJERA) ISSN 2248-9622, Vol. 3, Issue 1 pp 523-526".  External link in |title= (help)
  3. ^ Koch, Steven J. (4 March 2011). "I am maximally-skeptical that there currently exists any evidence that drinking deuterium-depleted water has health benefits or will cure disease". Blogspot.com. Retrieved 22 July 2011. 
  4. ^ Thompson, J.F.: Biological effects of deuterium, Pergamon Press, New York 1963.