The solution suggested by Pichumani Kumar is good if you have couplings
to employ for polarization transfer though the optimization of the
delays is a not trivial task depending on the number of coupled and
equivalent protons.(See Blechta V., Schraml J.: Product operator
formalism applied to large spin systems (INEPT and DEPT examples). J.
Magn. Reson. 69, 293 (1986).
and references therein)
If you cannot use polarization transfer and your spectral lines are
narrow (relative to the quartz line) use spin-echo to suppress the broad
line.
If the lines you are interested in are also broad, you have to resort to
subtracting the signal of the tube (and probe!!!) recorded in a separate
measurements.
Sincerely,
Jan Schraml
_____
> From: Fauzi Mohd Som, Dr [mailto:fauzi_at_lgm.gov.my]
> Sent: Wednesday, August 18, 2004 10:44 AM
> To: ammrl_at_ammrl.org
> Subject: Removing Background signal for Si-29 NMR
I wonder if anyone can provide me a suggestion on how to remove the
background signal of the quartz NMR tube when I do Si-29 liquid state
NMR.
Best regards,
Fauzi Mohd Som (Dr.)
Malaysian Rubber Board
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Received on Thu Aug 19 2004 - 08:37:45 MST