Acid properties of the oxytetrafluorides of molybdenum, tungsten, and uranium toward some inorganic fluoride ion donors

1975 ◽  
Vol 14 (8) ◽  
pp. 1822-1830 ◽  
Author(s):  
R. Bougon ◽  
T. Bui Huy ◽  
P. Charpin
Keyword(s):  
Fluoride Ion ◽  
Inorganic Fluoride ◽  
Acid Properties

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 Titanium Hydroxide as a New Inorganic Fluoride Ion Exchanger.

2002 ◽  
Vol 110 (1285) ◽  
pp. 801-803 ◽  
Author(s):  
Tatsumi ISHIHARA ◽  
Yasuhiro SHUTO ◽  
Soichiro UESHIMA ◽  
Ho Li NGEE ◽  
Hiroyasu NISHIGUCHI ◽  
...  
Keyword(s):  
Ion Exchanger ◽  
Fluoride Ion ◽  
Titanium Hydroxide ◽  
Inorganic Fluoride

Compound A Concentrations during Sevoflurane Anesthesia in Children

1996 ◽  
Vol 84 (3) ◽  
pp. 566-571 ◽  
Author(s):  
Edward J. Frink ◽  
William B. Green ◽  
Elizabeth A. Brown ◽  
Mark Malcomson ◽  
Leslie C. Hammond ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Flow ◽  
Pediatric Anesthesia ◽  
Soda Lime ◽  
Hepatic Function ◽  
Ion Concentration ◽  
Fluoride Ion ◽  
Sevoflurane Anesthesia ◽  
Inorganic Fluoride ◽  
Compound A

Background Sevoflurane is a new inhalation agent that should be useful for pediatric anesthesia. Sevoflurane undergoes degradation in the presence of carbon dioxide absorbents; however, quantification of the major degradation product (compound A) has not been evaluated during pediatric anesthesia. This study evaluates sevoflurane degradation compound concentrations during sevoflurane anesthesia using a 2-1 fresh gas flow and a circle system with carbon dioxide absorber in children with normal renal and hepatic function. Methods The concentrations of compound A were evaluated during sevoflurane anesthesia in children using fresh soda lime as the carbon dioxide absorbent. Nineteen patients aged 3 months-7 yr were anesthetized with sevoflurane (2.8% mean end-tidal concentration) using a total fresh gas flow of 21 in a circle absorption system. Inspiratory and expiratory limb circuit gas samples were obtained at hourly intervals, and the samples were analyzed using a gas chromatography-flame ionization detection technique. Carbon dioxide absorbent temperatures were measured in the soda lime during anesthesia for hepatic and renal function studies. Venous blood samples were obtained before anesthesia, at the end of anesthesia, and 2h after anesthesia for plasma inorganic fluoride ion concentration. Results The maximum inspiratory concentration of compound A was 5.4 +/- 4.4 ppm (mean +/- SD), and the corresponding expiratory concentration was 3.7 +/- 2.7 ppm (mean +/- SD). The maximum inspiratory compound A concentration in any patient was 15 ppm. Mean concentrations of compound A peaked at intubation and remained stable, declining slightly after 120 min of anesthesia. The duration of anesthesia was 240 +/- 139 min (mean +/-SD). Maximum soda lime temperature ranged between 23.1 degrees C and 40.9 degrees C. There was a positive correlation between maximum absorbent temperature and maximum compound A concentration (r2 = 0.58), as well as between the child's body surface area and maximum compound A concentration (r2 = 0.59). Peak plasma inorganic fluoride ion concentration was 21.5 +/- 6.1 microgmol/1. There were no clinically significant changes in hepatic or renal function studies performed 24 h postanesthesia. Conclusions Sevoflurane anesthesia of 4 h in normal children using a 2-1 flow circle system produced concentrations of compound A of 15 ppm or less. There was no evidence of abnormality of renal or hepatic function up to 24 h after anesthesia; however, larger studies will be required to confirm the absence of organ toxicity.

Plasma Inorganic Fluoride Ion Concentrations with Sevoflurane Anesthesia in obese and Nonobese Subjects

1992 ◽  
Vol 77 (Supplement) ◽  
pp. A385 ◽  
Author(s):  
E J Frink ◽  
T P Malan ◽  
E A Brown ◽  
S E Morgan ◽  
B R Brown
Keyword(s):  
Fluoride Ion ◽  
Sevoflurane Anesthesia ◽  
Inorganic Fluoride ◽  
Ion Concentrations

A1136 Nephrotoxicity of Compound A and/or Inorganic Fluoride Ion (F) in Normal Volunteers

1997 ◽  
Vol 87 (Supplement) ◽  
pp. 1136A ◽  
Author(s):  
J. Cantillo ◽  
M.E. Goldberg ◽  
I. Gratz ◽  
E. Deal ◽  
M. Afsharvand ◽  
...  
Keyword(s):  
Fluoride Ion ◽  
Inorganic Fluoride ◽  
Compound A ◽  
Normal Volunteers

Colorimetric receptors for naked eye detection of inorganic fluoride ion in aqueous media using ICT mechanism

RSC Advances ◽  
2012 ◽  
Vol 2 (28) ◽  
pp. 10499 ◽  
Author(s):  
Madhuprasad ◽  
A. Nityananda Shetty ◽  
Darshak R. Trivedi
Keyword(s):  
Aqueous Media ◽  
Fluoride Ion ◽  
Inorganic Fluoride ◽  
Eye Detection ◽  
Naked Eye ◽  
Naked Eye Detection
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