Measurement of pH by NMR Spectroscopy in Concentrated Aqueous Fluoride Buffers.
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ABSTRACT:
SUBMITTER: Gerken JB
PROVIDER: S-EPMC3029024 | biostudies-literature | 2011 Jan
REPOSITORIES: biostudies-literature
Publications
Measurement of pH by NMR Spectroscopy in Concentrated Aqueous Fluoride Buffers.
Journal of fluorine chemistry 20110101 1
An NMR spectroscopic technique has been developed to give rapid, accurate pH measurements on tenth-milliliter samples of concentrated acidic aqueous solutions buffered by fluoride ion in the pH 1.5 - 4.5 range. The fluoride (19)F chemical shift has been calibrated as a function of pH at 0.1 and 1.0 M concentration by reference to an internal 3-fluoropyridine standard. Subsequent measurements of fluoride buffer pH required no additives and only two NMR spectra in the presence of an external refer ...[more]
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