Hi folks.
I am looking for alternative ways to study water distribution and mobility in my food sample. Typically time-domain NMR is employed to identify the T2 relaxation time corresponding to free, bound and immobilised water but we dont have the instrument here in my area. I've found a promising (and validated) method using NIR spectroscopy, however it is run on FTIR and requires wavenumber up to 5500 cm-1 to capture the water band. Again, the FTIR I have access to only provide information until 4000 cm-1.
Is there any way I can obtain this information other than the said methods?
Dear Nursyafiqah
..do you have a "normal" NMR? In this case you can measure (most likely) diffusion data to discriminate different "waters"....
Good Luck
Alfred
Dear Nursyafiqah,
If you have access to a "normal" NMR spectrometer, which is usually available at an analytical facility of a university, you can perform similar measurements like using time domain NMR. You can measure T2 time also here (maybe even better using pseudo 2d compare with just fitting the direct FID). Using software like "Dynamcis Center" (or others) Free of charge you can analize the data. In addition you can measure DOSY like Alfred Ross suggested.
Many Greetings,
Kristof
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