after i wrote that post i actually went and looked at a chart of the whole radioactive decay series that includes polonium-210...i learned that radon-222 decays to polonium-210 in several steps...one of the intermediate steps is a form of lead that has a half life long enough that most of it would still be there after eight years...with some of it decaying further to form polonium-210 even now...
radon-222 is a dangerous but all too common natural contaminant...and i found some articles that said unusually high levels of radon-222 were found in arafat's grave... the swiss lab claimed that the polonium-210 that they found could not have been naturally occurring...i am not a nuclear physicist but i honestly can't see how that could say that with any certainty...polonium-210 is polonium-210 regardless of where it came from... so maybe they are overstating their case and the polonium-210 they found really could have been the result of postmortem decay of naturally occurring radon-222 concentrated in arafat's grave...
another thing i found out is that radon-222 is also involved in some 'quack' medical remedies...i know that arafat was sickly near the end of his life due to his bad health habits and the israeli government denying him access to competent medical care...so i wonder if he resorted to some kind of pseudoscientific radon elixir... in that case the radon-222 could have mostly decayed into a lead isotope which continues to decay into fresh polonium-210 long after his death...the radon-222 itself could have also given him deadly cancer... that might also account for the secrecy surrounding arafat's death...including his wife having his medical records sealed...there would have been a reluctance to say anything that would imply that his death was possibly in any way self inflicted...
or the polonium-210 could have been planted... or the swiss lab could be incompetent and the russian lab could be right...
i wonder if they tested for that long lived lead isotope that is an intermediate step between radon-222 and polonium-210?
You have the makings of a conspiracy theorist. BWAHAHAHAHAHA