Related Experiment Videos
Determination of fluoride in wine by fluoride selective ion electrode, standard addition method: collaborative study
Bruno E Trombella1, Arthur Caputi, Daniel Musso
1E&J Gallo Winery, Analytical and Chemical Sciences Department, PO Box 1130, Modesto, CA 95353, USA. bruno.trombella@ejgallo.com
Journal of AOAC International
|February 26, 2004
Summary
A collaborative study validated a rapid fluoride determination method for wine using a fluoride selective ion electrode. The method demonstrated high accuracy and precision, supporting its adoption for routine analysis.
Area of Science:
- Food Chemistry
- Analytical Chemistry
- Electrochemistry
Background:
- Accurate fluoride determination in wine is crucial for quality control and consumer safety.
- Existing methods for fluoride analysis in wine can be time-consuming and complex.
Purpose of the Study:
- To establish the accuracy, precision, and reproducibility of a rapid fluoride determination method in wine.
- To evaluate the suitability of a fluoride selective ion electrode for routine wine analysis.
Main Methods:
- A collaborative study involving 12 laboratories (5 in Europe, 7 in the US).
- Analysis of fluoride-fortified red and white wine samples (0.2–3.0 mg/L) using a fluoride selective ion electrode.
- Statistical evaluation including relative standard deviations of repeatability and reproducibility, and HORRAT values.
Main Results:
- Relative standard deviations of repeatability ranged from 1.94% to 4.88%.
- Relative standard deviations of reproducibility ranged from 4.15% to 18.40%.
- Average recovery was 99.97%, with HORRAT values between 0.30 and 0.97.
Conclusions:
- The rapid fluoride determination method using a fluoride selective ion electrode is accurate, precise, and reproducible.
- The study supports the recommendation for the adoption of this method as First Action for wine analysis.