Environment & Energy
In reply to the discussion: Sky-High Radiation Found in Fukushima Fish [View all]MAD Dave
(204 posts)Mercury is a known bio accumulator. To my knowledge, very few, if any organisms have the requisite enzymes or biological pathways to excrete mercury. As a result, the amount of mercury in the food chain increases over time.
Caesium may also bioaccumulate to some extent, but its position in the periodic table posits that it will act very similar to potassium and the overall bio accumulation would be low.
This (http://www.nuclearactive.org/docs/BF_FS.pdf) summary paper suggests that if you comsumed 10,000 kg of game fish over the course of your lifetime from near Los Alamos National Labratory, a site with known high levels of radionuclide contamination including caesium that you would face an unacceptably increased risk of cancer from radioactive caesium. Assuming that you live 75 years, you would have to eat over 3/4 lbs of caesium contaminated fish per day to be exposed to an unacceptable risk. That is a shitload of fish, even marine cultures do not eat that much fish.
The amount of caesium being released into the ocean near Japan would have to be enormous to accumulate enough caesium to be dangerous to North American consumers.
Once again, I hate fearmongering and this whole thing is a prime example.
Again, asbestos (known cancer risk) underwear on - flame away!