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Atomic Weight of "Tritiated Water"



When we speak of "tritiated water", to what are we referring, T2O or HTO?
This makes a difference when we want to speak of its molecular weight.  T2O
has a MW of 22 (3X2 + 16).  HTO has a MW of 20 (3x1 + 1X1 + 16).  This is a
difference of some 10%, which may be significant.
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William G. Nabor
University of California, Irvine
EH&S Office
Irvine, CA,  92717-2725
WGNABOR@UCI.EDU
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