Ever since we upgraded our Avance II console to the Neo console I've seen
odd peaks in my 19F SSNMR spectra. The peaks are always about 1960 Hz on
either side of the 'real peak' and are typically positive on one side and
negative on the other. Other than the console upgrade nothing else has
changed (same probe, sample cabling, same rotors, etc). pulprog = zg.
If I collect one scan at a time these off peaks seem to be +ve on the
right side on the first ns=1 scan then -ve on the right side of the second
ns=1 scan and so on. After many scans both off peaks average to +ve.
Does any one have a suggestion as to what is causing these peaks and how
to eliminate them?
Thanks,
Vernon
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Received on Wed Dec 12 2018 - 04:17:14 MST