Evaluation of the lanthanum fluoride membrane electrode response in acidic solutions: the determination of the pka of hydrofluoric acid.
Measurements made with a combination of glass and lanthanum fluoride membrane electrodes in solutions which are strongly acid but varying in ionic strength have been used to calculate the dissociation constant of hydrogen fluoride and to validate the response of the latter electrode in strongly acidic media containing fluoride ions.
Vanderborgh
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Analytical Methods Division-5421 Sandia Laboratory, Albuquerque, New Mexico, U.S.A.