Tagged questions

eightfold suppression of water and ethanol

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Hi, I'm trying to perform an NOESYGPPS 1D 1H NMR experiment to suppress water and the ethanol signals in a wine sample, ...
Updated: Calin Floare 1 Feb 06 '17 at 05:15

Running a wet sequence

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Hi, I am trying to run a wet sequence but I'm having trouble getting good results on a sample with 90:10 water:methanol...
Posted: gravatar 83 / Updated: Pete Gierth 401 Dec 05 '14 at 10:35

Measuring T1 for a low concentration (1mM) compound in water.

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Hi, I'm trying to measure T1 for a compund at 1mM in water using t1ir. Seeing how my concentration is so low, phasing m...
Posted: gravatar 83 / Updated: Ulrich Haunz 210 Oct 23 '14 at 08:39

why is the number of scans in watergate a multiple of 8?

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Hi, In the p3919gp the number of scans is a multiple of 8 which makes optimizing this experiment a bit of a pain. can a...
Posted: gravatar 83 / Updated: Arkadiusz Leniak 238 Aug 20 '14 at 00:32

1D NOESY with selective excitation and water suppression

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Hi, I am trying to collect 1D NOESY spectrum of a small protein in 90% H2O with selective excitation so I could follow ...
Posted: slawojek 1 / Updated: kyleabeauchamp 1 Mar 06 '14 at 15:37

WEFT water suppression on Varian?

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I am working with carbohydrates and in 1D NMR we have anomeric protons very close to the HOD peak, sometimes even right ...
Posted: ssvanleeuwen 1 / Updated: Bharathwaj 112 Apr 27 '13 at 08:32

What is the more effective method of water suppression for NOESY?

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Hi I've been reading about WET water suppression scheme here where it is mentioned as superior to WATERGATE in that it a...
Posted: Evgeny Fadeev 5771 / Updated: georgeg 301 Jul 19 '10 at 08:53

Why is water suppression is harder to achieve in salty samples?

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Tried an excitation sculpted watergate on a sample in H2O with 150 mM salt and I found that it is very hard to suppress ...
Posted: Evgeny Fadeev 5771 / Updated: sekhar Talluri 621 Jul 11 '10 at 02:44

Is there a way to reduce on-carrier solvent artifact in States-TPPI?

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Here is a TOCSY recorded with States-TPPI method on a sample in 10/90 D2O/H2O. States-TPPI is expected to move the "ho...
Posted: Evgeny Fadeev 5771 / Updated: sekhar Talluri 621 Jul 10 '10 at 19:00
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