Recently I was approached by a fellow researcher about a collaboration
where he wants me to measure the T1 of water in leaves of rice plant. In
the literature, the measured T1 has been used to identify the "mobility"
of water in the leaf which is related to the "availability" of water to the
plant. For example, it has been shown that the T1 can be related to
droughts or that in drought resistant variety it has some unique signature.
Anyway, before trying to perform the actual experiment with leaves, I
tried to measure the T1 value of a 90%H20/10%D20 solution, and to my
surprise, in a standard inverse-recovery experiment, I observed a
sigmoidal rise of water signal as a function of Tau (instead of an exponential
growth). I feel that since I am dealing with a huge solvent peak,
either some special trick is needed to measure the T1 or that there is
something special about H20.
I looked around for an answer but failed. Would one of you be able to
shed some light so that I can finish this simple experiment?
best regards,
Gautam Basu