Recently I tried to get a W-183 NMR spectrum on Na2WO4 (1M in D2O) on our
DRX500 without success. According to a book, it should be observable with
2000 scans. But the problem I had was when using "rga" to scale the
receiver gain, it set the RG to 2. Both DRX500 gave the same results. There
was nothing to be seen in a few hundred scans but a slopped noisy baseline.
Probe tuned up fine and I was using a 5mm BBO Z-PFG probe, D1=1sec,
P1=50us, PL1=0, SW=10000 Hz. Any suggestions to this problem will be much
appreciated.
Thank you.
Best Regards,
Jiejun
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Jiejun Wu NMR Facility Manager
Dept. of Chemistry (714)824-6010 (office)
516 Physical Sciences 1 (714)824-5649 (lab)
Univ. of California, Irvine (714)824-8571 (fax)
Irvine, CA 92697-2025 jwu@uci.edu (internet)