Question from NMRWiki Q&A forum Difficulties with wobbing.

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[Question from NMRWiki Q&A forum] Difficulties with wobbing.

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07-02-2012, 07:26 PM

nmrlearner

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Difficulties with wobbing.

Difficulties with wobbing.

Hello, dear NMR-comrades!

I work on Bruker AVANCE II 400 MHz NMR-spectrometer and today I had some troubles with wobbing. It was necessary to record 13C solid state spectrum of reduced graphite oxide (RGO) using direct pulses, I mean there was no cross-polarization (BTW, RGO has some conductivity unlike graphite oxide). After insertion of the sample I couldn't tune and match it. I took the sample off and inserted another one but still had a problem with wobb. What was wrong? Could such effects occur due to conductivity of the sample?

Thanks.

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