Determination of fluoride in drinking water and in urine of adolescents living in three counties in Northern Chihuahua Mexico using a fluoride ion selective electrode

2005 ◽  
Vol 81 (1) ◽  
pp. 19-22 ◽  
Author(s):  
Alma Ruiz-Payan ◽  
Melchor Ortiz ◽  
Maria Duarte-Gardea
Keyword(s):  
Drinking Water ◽  
Ion Selective Electrode ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Fluoride Ion Selective Electrode

scholarly journals Determination of fluoride content in drinking water and tea infusions using fluoride ion selective electrode

2007 ◽  
Vol 52 (2) ◽  
pp. 155-168 ◽  
Author(s):  
Milos Rajkovic ◽  
Ivana Novakovic
Keyword(s):  
Drinking Water ◽  
Mineral Waters ◽  
Fluoride Content ◽  
Ion Selective Electrode ◽  
World Health ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Fluoride Ions ◽  
Fluoride Ion Selective Electrode

Potentiometric analysis of fluoride content (as F- ion) in solutions by using fluoride ion-selective electrode is simple, reliable and cheap. Very small concentrations of fluoride-ions (to 10-6 mol/dm3) can be determined by fluoride selective electrode, with regulation of ion strength of a solution and control of concentration of hydroxide ions and interfering ions of metals. The influence of pH and complexing ions of metals can be successfully regulated by the TISAB solution and by preserving pH value in the range from 5.00 to 7.00. The content of fluorides in the samples can be determined by the method of direct potentiometer, and in the case of very low concentration by standard addition method. In this paper it was analyzed the determination of fluoride ions concentration in bottled mineral waters and water from Belgrade plumbing in two Belgrade districts (Palilula and Novi Beograd) and in tea, by using the fluoride selective electrode. It was determined that the content of fluoride ions in bottled mineral water significantly differs from values given on declaration, and that content of fluoride ions varies over a period of time. The content of fluoride ions in water from plumbing in two Belgrade districts at the time of analysis was significantly increased and exceeded values given in Regulation for drinking water quality. The received results from the analysis of fluorides in teas show that fluorides exist in teas in different concentrations. There are also differences between the same kinds of tea, which is noted with mint (Mentha piperitae folium), as a consequence of differences between soils where it was planted. As taking of fluorides, according to World Health Organisation recommendation (WHO), is limited in the range from 2 to 4 mg per day, it is necessary to give the content of fluorides on all products that are used in human consumption.

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.

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
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