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Old 06-21-2011, 03:40 PM
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Default negative NMR peaks

negative NMR peaks

I am very new to NMR and have little experience of it. However I am trying to use it to determine the composition of a mixture. A spectra which I have just obtained contains negative peaks which are giving me incorrect inegrals.

What would cause this? and is there any way to correct it? I can't find much in literature regarding this.

Thanks for your help

Dean



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