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Noun1.thorium-228 - radioactive isotope of thorium with mass number 228
atomic number 90, thorium, Th - a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
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References in periodicals archive ?
NFS ultimately bought out and demolished most of the homes that abutted its fence line, NFS continues to spew Plutonium out of its stacks and rains down on the town of Erwin Uranium-234, 235, & 238, Thorium-228, 230, & 232, as well as Technetium-99.
Notably, the large difference in solubility between [sup.228]Ra and [sup.228]Th gives rise to a chronometer that has the potential to determine the time when fluids were extracted from the Marcellus Shale (for more information, see Supplemental Material, "Expanded methods, Thorium-228 ingrowth").