SimilarityRank
strontium-90 0.933 87007
strontium 0.885 49539
iodine-131 0.877 51608
polonium-210 0.877 71984
caesium 0.874 37760
radionuclide 0.861 25560
naturally-occurring 0.851 73009
longer-lived 0.849 77972
organochlorine 0.849 48475
ruthenium 0.845 96719
heparan 0.844 85580
methanogenesis 0.839 54198
cancer-causing 0.839 51516
organophosphate 0.838 84664
mtbe 0.837 87435
thorium 0.836 60984
carbon-14 0.834 58995
biphenyl 0.834 49287
adsorbent 0.833 52226
polonium 0.832 36755
methanogenic 0.831 36166
lindane 0.831 67136
molybdenum 0.830 51774
colloid 0.830 46508
beryllium 0.828 52345