Determination of inorganic fluoride in blood with a fluoride ion-selective electrode.

1987 ◽  
Vol 33 (2) ◽  
pp. 253-255 ◽  
Author(s):  
E Kissa
Keyword(s):  
Whole Blood ◽  
Fluoride Concentration ◽  
Ion Selective Electrode ◽  
Fluoride Ion ◽  
Inorganic Fluoride ◽  
Selective Electrode ◽  
Cell Potential ◽  
Novel Method ◽  
Fluoride Ion Selective Electrode

Abstract Inorganic fluoride in whole blood, serum, or plasma has been determined with a fluoride ion-selective electrode by adding the 0.5- to 2.0-mL sample to 20 mL of water containing a buffer and fluoride, 25 micrograms/L. The fluoride concentration in the sample is calculated from the resulting cell potential difference recorded after equilibrating for 10 min. This novel method has the advantages of simplicity, accuracy, and high precision, standard deviations for 5 to 7 replicate determinations of fluoride ranging from +/- 1.7 to +/- 2.4 micrograms/L. For whole blood from donors living in an area with fluorinated drinking water, the F- concentration was 20 to 60 micrograms/L.

scholarly journals simplified protocol to determine total fluoride concentration in NaF/ silica-based toothpastes

2020 ◽  
Vol 19 ◽  
pp. e201689
Author(s):  
Jenniffer Quiroz-Torres ◽  
Cinthia Pereira Machado Tabchoury ◽  
Carlos Liñán-Durán ◽  
Antonio Pedro Ricomini-Filho ◽  
Ailin Cabrera-Matta ◽  
...  
Keyword(s):  
Fluoride Concentration ◽  
T Test ◽  
Ion Selective Electrode ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Direct Technique ◽  
The Mean ◽  
Fluoride Salts ◽  
Fluoride Ion Selective Electrode

Aim: To determine total fluoride (TF) concentration in Na2FPO3/Ca-based toothpastes, using fluoride ion selective electrode (F-ISE) by the direct technique, it is necessary to use acid (Ac+) to hydrolyze the FPO3 2- ion and to dissolve insoluble fluoride salts bound to the abrasive. For NaF/silicabased toothpastes, the use of acid is not necessary (Ac-) and a simplified protocol could be followed. Methods: Thus, we evaluated TF concentration in seven brands of NaF/silicabased toothpastes, following the validated conventional Cury’s protocol (Ac+) or a simplification of this protocol (Ac-). Fluoride was analyzed with ISE calibrated with fluoride standard solutions prepared in the same conditions as the samples (Ac+ or Ac-). Results: The mean (±SD; n=21) of TF concentrations (μg F/g) found by Ac+ (971.3±191.2) and Ac- (982.4±201.3) protocols were not statistically different (t test, p=0.22). The TF concentrations found agree with those declared by the manufacturers, except for one toothpaste imported from China. Conclusion: The findings suggest that the determination of fluoride in NaF/silica-based toothpastes can be accurately made using a simplified protocol of analysis.

Fluoride determination in various matrices relevant to nuclear industry: A review

2007 ◽  
Vol 95 (10) ◽  
Author(s):  
R. M. Sawant ◽  
M. A. Mahajan ◽  
Poonam Verma ◽  
Dipti Shah ◽  
U. K. Thakur ◽  
...  
Keyword(s):  
Nuclear Industry ◽  
Ion Selective Electrode ◽  
Nuclear Technology ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Experimental Parameters ◽  
Fluoride Determination ◽  
Reactor Materials ◽  
Fluoride Ion Selective Electrode

The determination of fluoride from diverse matrices at front and back end of nuclear technology and some studies from this laboratory on optimizations of different experimental parameters differing with multiple fuels and reactor materials, have been reviewed. The most useful techniques such as fluoride ion selective electrode (F-ISE) and ion-chromatography (IC) widely adopted as routine methods for fluoride determination in nuclear industry have been discussed. The effect of various buffer strengths on the response of the fluoride ion selective electrode has been examined. The ion chromatographic studies on mobile phase concentration, medium of sample, sample injection volume

Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode

2017 ◽  
Vol 7 ((1-4)) ◽  
pp. 8
Author(s):  
Zia ul Arefin ◽  
Tehseen Ahmed ◽  
Sana Imran ◽  
M. Asad Khan Tanoli ◽  
Zahid Khan
Keyword(s):  
Fluoride Content ◽  
Ion Selective Electrode ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Tea Infusions ◽  
Fluoride Ion Selective Electrode
Sign in / Sign up

Export Citation Format

Share Document