In reply to Jones Beene's message of Mon, 8 Dec 2008 18:32:07 -0800 (PST): Hi, [snip] >Hi Robin, > > >> Hydrogen gas was added to the experiment. > > >Yes indeed - but if I am not mistaken he clearly states that there was NO >significant hydrogenation, meaning of course that the phenanthrene remained >largely unaffected chemically; and that the second (outsourced) MS was >performed on the black residue. Possibly it was even slightly hydrogen >depleted by then, since in the ongoing gas MS, some methane was seen. [snip] Only about half the C12 is purported to have converted to C13, which means that the remainder was methane and higher hydrocarbons, or just plain C12. The proportion that was plain C12 could easily have provided sufficient H for the other substances (even without the H2 gas). Furthermore, production of C13 would also entail consumption of an H atom, so a scarcity of H would also limit the amount of C13 produced. In short, I don't think H scarcity was a limiting factor.
Regards, Robin van Spaandonk <[EMAIL PROTECTED]>
