scholarly journals Fluoride determination in carbon nanotubes by ion selective electrode

2012 ◽  
Vol 23 (6) ◽  
pp. 1193-1198 ◽  
Author(s):  
Fabiane G. Antes ◽  
Juliana S. F. Pereira ◽  
Laurien C. Spadoa ◽  
Edson I. Muller ◽  
Erico M. M. Flores ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Fluoride Determination

scholarly journals Ionic Liquid-Multiwalled Carbon Nanotubes Nanocomposite Based All Solid State Ion-Selective Electrode for the Determination of Copper in Water Samples

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2869
Author(s):  
Cecylia Wardak ◽  
Karolina Pietrzak ◽  
Małgorzata Grabarczyk
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Solid State ◽  
Multiwalled Carbon Nanotubes ◽  
Water Samples ◽  
Limit Of Detection ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Multiwalled Carbon ◽  
Copper Determination

A new copper sensitive all solid-state ion-selective electrode was prepared using multiwalled carbon nanotubes-ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) nanocomposite as an additional membrane component. The effect of nanocomposite content in the membrane on the electrode parameters was investigated. The study compares, among others, detection limits, sensitivity, and the linearity ranges of calibration curves. Content 6 wt.% was considered optimal for obtaining an electrode with a Nernstian response of 29.8 mV/decade. An electrode with an optimal nanocomposite content in the membrane showed a lower limit of detection, a wider linear range and pH range, as well as better selectivity and potential stability compared to the unmodified electrode. It was successfully applied for copper determination in real water samples.

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 choline and derivatives with a solid-contact ion-selective electrode based on octaamide cavitand and carbon nanotubes

2009 ◽  
Vol 25 (2) ◽  
pp. 344-349 ◽  
Author(s):  
Jordi Ampurdanés ◽  
Gastón A. Crespo ◽  
Alicia Maroto ◽  
M. Angeles Sarmentero ◽  
Pablo Ballester ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ion Selective Electrode ◽  
Solid Contact ◽  
Selective Electrode

scholarly journals Determination of fluoride in spices using microwave induced oxygen combustion

2012 ◽  
Vol 81 (3) ◽  
pp. 319-323
Author(s):  
Emanuel Šucman ◽  
Jiří Bednář
Keyword(s):  
Ion Selective Electrode ◽  
Complete Sample ◽  
Selective Electrode ◽  
Straight Line ◽  
Relative Standard ◽  
Fluoride Determination ◽  
High Pressure Oxygen ◽  
Fluoride Ion Selective Electrode ◽  
Good Agreement

Fluorine is essential in human and/or animal nutrition; therefore, so it is important to know its concentration in a diet. One of the possible sources of fluorine for humans is spice, containing various amounts of this trace element. This work describes the method for fluoride determination in various kinds ofspices using microwave-supported sample preparation in high pressure oxygen atmosphere followed by potentiometry with a fluoride ion-selective electrode. Parameters of the microwave device for combustion procedure were checked and optimized in order to find settings ensuring complete sample combustion and/or absorption of the analyte in the absorption solution. For the ion-selective electrode measurement, the technique of standard straight line was chosen. Concentrations of fluorides in spices and spice blends under investigation ranged from 3.15 mg·kg-1 to 26.08 mg·kg-1. In order to check the accuracy of the method Certified Reference Material Fluoride in Vegetation NIST 2695 was used and a good agreement between certified and found values was found. The precision expressed as the relative standard deviation ranged from 0.6% to 5.0%. The method is fast, accurate and reliable for this kind of analysis. In recent literature data on fluoride concentrations in spices and/or spice blends have not been found.

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