| Literature DB >> 21278857 |
Abstract
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 reference standard.Entities:
Year: 2011 PMID： 21278857 PMCID： PMC3029024 DOI： 10.1016/j.jfluchem.2010.10.006
Source DB: PubMed Journal: J Fluor Chem ISSN： 0022-1139 Impact factor: 2.050