Determination of fluoride in aluminum fluoride by wide line nuclear magnetic resonance

SUMMARY —A method employing the fluoride ion‐selective solid‐state membrane electrode has been developed to determine the presence and amount of free fluoride ion in carbonated and noncarbonated beverages. Representative carbonated and non‐carbonated beverages containing known amounts of added fluoride were used to relate electrode activity measurements to fluoride concentration in parts per million. Calibration curves were constructed for each system wherein fluoride concentration (ppm), was plotted as a function of potentiometric measurements (millivolts); using the fluorideion‐activity‐electrode as the indicator electrode and a saturated calomel electrode (SCE), as the reference electrode. Beverages studied were selected to represent a range of pH values and complexity of organic and inorganic constituents present in order to demonstrate the ability of the fluoride‐ion‐electrode to selectively determine free‐fluoride ion.

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“…Measurements carried out with the Varian PA-7 NMR analyzer followed procedures described by Ferren et al (1967).…”

Section: Analytical Proceduresmentioning

confidence: 99%

“…Spectrophotometric, oscillometric and other procedures are described in review articles written by Fishman et al (1967). Direct determination of fluoride in water solution has been carried out without preliminary separation of any kind by means of wide line nuclear magnetic resonance by Ferren et al (1967).…”

Section: Introductionmentioning

confidence: 99%

Potentiometric Determination of Fluoride in Beverages by Means of the lon Selective Solid State Electrode

Ferren

Shane

1969

Journal of Food Science

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“…Fluoride. Fluoride was determined in aluminum fluoride by use of wide line nuclear magnetic resonance (80).…”

Section: Mn Almentioning

confidence: 99%

Nonferrous metallurgy. I. Light metals: aluminum, beryllium, titanium, and magnesium

Oliver¹,

Cox²

1969

Anal. Chem.

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“…Fluoride content in solid A1F3 salts has been obtained by measuring peak-to-peak height of the fluorine broad-line derivative spectrum (640). Quantitative measurement of 13C distribution a t natural abundance has permitted estimation of aromaticity in coal tar and oils (721).…”

Section: Broad-line and Pulsed Nmrmentioning

confidence: 99%

Nuclear magnetic resonance spectrometry

Heeschen¹

1968

Anal. Chem.

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Determination of fluoride in aluminum fluoride by wide line nuclear magnetic resonance

Cited by 6 publications

References 12 publications

Potentiometric Determination of Fluoride in Beverages by Means of the lon Selective Solid State Electrode

Potentiometric Determination of Fluoride in Beverages by Means of the lon Selective Solid State Electrode

Nonferrous metallurgy. I. Light metals: aluminum, beryllium, titanium, and magnesium

Nuclear magnetic resonance spectrometry

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