AI
both chemical and radioactive contuminants.
Current population body burden
’ levels of the common radiocontaminants are generally considerably less
" / than one ten-thousandth of the levels listed in Table II.
—
The highest
* relative level is for potassium-40 which is present at a level of about one
thousandth that estimated to produce severe long term éffects.
hus been a part of all individuals since the origin of life.
Potassium-40
It is a.
‘naturally occurring form of potassium and makes up 0.01% of the potassium
of the earth.
It may be that some chemical agents are present in the body
at levels much closer to that expected to produce severe long term effects.