Hi everyone
This is a question more out of curiosity than anything else, but a student
noticed that when she was running very long 13C experiments of her isolated
organic compounds (ns =7500 or so, d1 = 4 sec), she sees a tiny dispersive
signal (see attached at 176 ppm). It’s appearing consistently in the
samples she’s running. It doesn’t seem to be any of the
typical artifacts. It’s not visible in lower signal to noise spectra.
Given how difficult it is to observe, I’m not concerned with
eliminating it, but I am curious.
Does anyone have any ideas what it could be?
Beth Moscato
Temple University
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Received on Wed Dec 03 2025 - 09:19:14 MST