>I look for a stable compound at high pH values ( pH 13 - 14) for
>concentration standard 31P NMR spectroscopy. Indeed, I tried the
>Me3PO4. At acid pH this compound is actually stable, but at very
>basic pH the degradation is very fast.
Dear Eric,
I would like to recommend a (concentric) reference capillary with any
suitable compound, concentration and pH. This capillary can be
standardized against other concentration references if required. I guess
that it would work best with larger tubes like 10 mm or so.
73, Peter
_at_ _at_
..
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| Peter Lundberg Ph: (+46 13) 22 27 90 |
| MR-Unit Fax: (+46 13) 22 27 92 (alt 22 47 49) |
| Dept of Radiation Physics Email: PeterL_at_raf.liu.se |
| University of Linkoping |
| S-581 85 Linkoping Efax: PeterLundberg_at_f013222792.fax.sunet.se |
| Sweden www: huweb.hu.liu.se/inst/imv/radiofysik/ |
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Received on Fri Dec 06 2002 - 09:55:36 MST