Far more worrying are several radioactive chemicals released as particles about one-quarter the size of a grain of sand. These include iodine-131, strontium-90 and cesium-137.
Unborn children may be exposed to Strontium-90 through drinking water and the diet of the mother.
婴儿在怀孕期间也可能通过母亲的饮食遭受锶- 90的侵袭。
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The radioactive isotope Strontium-90, one of the by-products of the bombs, spread into the atmosphere, fell onto the land, was ingested by dairy cows and passed into the milk supply.