By Richard E. Wainerdi (Eds.)
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Additional info for Analytical Chemistry in Space
Heavy hydrocarbons. There are some perhaps not widely accepted theories which postulate the presence of high-molecular-weight hydrocarbons on the lunar surface. C20) that as much as 10 g c m of such material might have been formed during the lifetime of primitive lunar atmosphere and theorized that it is now buried under many meters of meteoritic debris. C21) went a step further, considering it possible that there was a primitive hydrosphere that could have existed for 9 as long as 10 years, in which life developed as on Earth—producing a residue of heavy hydrocarbons similar to terrestrial oil and coal deposits.
W. Rowe et al. (1965) Phys. Rev. Let. 15, 8435; J. H. Reynolds (1963) réf. C17; J. H. Reynolds (1967) Ann. Rev. Nuc. Sei. 17, 253-316; Μ. Ν. Münk (1967) Earth and Planet Sei. Let. 2 , 301-9; Η. Funk and M. W. Rowe (1967) Earth and Planet Sei. Let. 2 , 215-19; H. G. Thode and W. H. Fleming (1953), réf. C17. of these elements in the agglomerating solid material, and has been "degassing" continuously since then through plutonic activity, volcanism, diffusion, meteorite impact, or other causes, they should have built up to very appreciable concentrations, if not continuously removed by a pumping mechanism.
The rate at which contamination will build up, although miniscule by Earth standards, is surprisingly large in terms of the postulated total amount of lunar atmosphere. If the 10 total pressure at the surface is 1 0 ~ torr and the average molecular weight is 20, then the 31 total number of particles in the lunar atmosphere is only approximately 10 . A part-per25 million constituent will then be represented by only 1 0 particles. If the actual total pressure is higher, or lower, these numbers will of course be shifted accordingly.
Analytical Chemistry in Space by Richard E. Wainerdi (Eds.)