Chemically Modified Multiwalled Carbon Nanotubes as Efficient Material for Construction of New Zinc (II) Ion Selective Carbon Paste Electrode

A sensor of m‐cresol nanopolymer/Pt‐electrode film for detection of lead ions by potentiometric methods

“…This behavior is evident from the decreasing potential values at the same pH with days. For comparison, Table shows a summary of our obtained results for the developed method and the results of previously reported conventional methods …”

“…The linear calibration curves ranged from 0.5 to 40.0 μg/L for Pb 2+ and from 0.5 to 45.0 μg/L for Cd 2+ , and the detection limits were estimated to be around 0.3 and 0.1 μg/L for Pb 2+ and Cd 2+ , respectively. Also, Ghaedi et al . fabricated Pb 2+ ion‐selective electrode based on 1‐((3‐((2‐hydroxynaphthalen‐1‐yl)methyleneamino)‐2,2‐dimethylpropylimino) methyl) naphthalen‐2‐ol at optimum values of all variables.…”

Functionalization of multiwalled carbon nanotubes for the solid-phase extraction of silver, cadmium, palladium, zinc, manganese and copper by flame atomic absorption spectrometry

“…Oxidization, activation and purification of MWCNTs were carried out according to our previous publication 34,35 . In order to activate, MWCNTs was suspended in 10% (v/v) hydrochloric acid (HCl) while stirring for 2 h. The treated MWCNTs were filtered and dried at 80°C for 5 h. Then for the oxidation of MWCNTs, 1 g of activated MWCNTs was added into 250 mL of 32.5% (w/v) nitric acid (HNO 3 ) solution and stirred for 36 h at room temperature.…”

Improvement in the performance of a zinc ion-selective potentiometric sensor using modified core/shell Fe3O4@SiO2nanoparticles

“…The relatively so transition metal ions such as Zn 2+ ions display great affinity for so coordination centers like nitrogen atoms. 39 Also, the lifetime and the stability of the suggested developed Zn 2+ sensor were evaluated using the potentiometric response to Zn 2+ ions in a series of standard Zn 2+ nitrate solutions and calculating the response slope of the optimized sensor. The lifetime was found to be 3 days.…”

“…In simple and efficient potentiometric methods, ion sensors that are called ion-selective electrodes (ISEs) are used as indicator electrodes for the determination of heavy metal ions and anions. [18][19][20][21][22][23][24][25] Among these electrodes, ISEs based on carbon paste, which are easy to structure, have simple instrumentation, a fast response, a wide dynamic range, reasonable selectivity, an easily renewable surface, are low cost and compatible with various types of modiers, 26 have been widely used as suitable matrices for the construction of the sensors. Selection of suitable modiers can improve the electrode surface state, which may cause a signicant enhancement in the target signals.…”