Preconcentration of heavy metals on multiwalled carbon nanotubes in water samples prior to analysis using FAAS

2017 ◽  
Vol 69 ◽  
pp. 261-267 ◽  
Author(s):  
Mohammad Saad Algamdi ◽  
Abdullah Saeed Alghamdi ◽  
Ibrahim Hotan Alsohaimi ◽  
Faiz Dakhil Allohybi ◽  
Ayoub Abdullah Alqadami
Keyword(s):  
Heavy Metals ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Water Samples ◽  
Multiwalled Carbon

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.

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