Chitosan from Waste Marine Sources Immobilized Silica: Differential Pulse Voltammetric Determination of Heavy Metal Ions from Industrial Effluent

2020 ◽  
Vol 5 (1-2) ◽  
pp. 15-21
Author(s):  
Vijay L. Gurav ◽  
Rajesh A. Samant
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Industrial Effluent ◽  
Differential Pulse ◽  
Voltammetric Determination

scholarly journals Fabrication of novel polymer-modified graphene-based electrochemical sensor for the determination of mercury and lead ions in water and biological samples

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Chenthattil Raril ◽  
Jamballi G. Manjunatha
Keyword(s):  
Heavy Metal ◽  
Detection Limit ◽  
Metal Ions ◽  
Biological Samples ◽  
Heavy Metal Ions ◽  
Electrochemical Techniques ◽  
Differential Pulse ◽  
Modified Graphene ◽  
Water And Biological Samples

Abstract Background This paper presents the application of polyglycine-modified graphene paste electrode (PGMGPE) for the electrochemical detection of Hg (II) and Pb (II) ions in the water and biological samples. Method The developed electrode was characterized by field emission scanning electron microscopy. Electrochemical techniques such as cyclic voltammetry and differential pulse voltammetry were used to study the behavior of metal ions. Results The modification process improves the electrochemical behavior of heavy metal ions. The peak current varied linearly with the increase of the concentration leading to a detection limit of 6.6 μM (Hg (II)) and 0.8 μM (Pb (II)), respectively. Conclusion The developed electrode exhibits good sensitivity, selectivity, stability, and lower detection limit, and was successfully applied to the determination of heavy metal ions in water and biological samples with a good recovery range.

scholarly journals A Ca2+ MOF combining highly efficient sorption and capability for voltammetric determination of heavy metal ions in aqueous media

2019 ◽  
Vol 7 (25) ◽  
pp. 15432-15443 ◽  
Author(s):  
Anastasia D. Pournara ◽  
Antigoni Margariti ◽  
Georgios D. Tarlas ◽  
Andreas Kourtelaris ◽  
Valeri Petkov ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Electrochemical Sensor ◽  
Heavy Metal Ions ◽  
Aqueous Media ◽  
Voltammetric Determination ◽  
Dual Function ◽  
Two Dimensional ◽  
First Time

The two-dimensional Ca-MOF shows a dual function as a sorbent and an electrochemical sensor for heavy metal ions, which is reported for the first time for a MOF material.

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