Electrochemical Performances of Diamond Like Carbon Films for Pb(II) Detection in Tap Water Using Differential Pulse Anodic Stripping Voltammetry Technique

2013 ◽  
Vol 11 (8) ◽  
pp. 1524-1529 ◽  
Author(s):  
A. Sbartai ◽  
P. J. F. Namour ◽  
F. Barbier ◽  
J. Krejči ◽  
R. Kučerovà ◽  
...  
Keyword(s):  
Tap Water ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Carbon Films ◽  
Diamond Like Carbon ◽  
Electrochemical Performances ◽  
Anodic Stripping

scholarly journals Synergetic Sensing Effect of Sodium Carboxymethyl Cellulose and Bismuth on Cadmium Detection by Differential Pulse Anodic Stripping Voltammetry

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5482 ◽  
Author(s):  
Jingheng Ning ◽  
Xin Luo ◽  
Faxiang Wang ◽  
Shouen Huang ◽  
Jianhui Wang ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Carboxymethyl Cellulose ◽  
Limit Of Detection ◽  
Tap Water ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Sodium Carboxymethyl Cellulose ◽  
Cadmium Detection ◽  
Anodic Stripping

In the present work, a novel electrochemical sensor was developed for the detection of trace cadmium with high sensitivity and selectivity in an easy and eco-friendly way. Firstly, a glassy carbon electrode (GCE) was modified with nontoxic sodium carboxymethyl cellulose (CMC) by a simple drop-casting method, which was applied to detect cadmium by differential pulse anodic stripping voltammetry (DPASV) in a solution containing both target cadmium and eco-friendly bismuth ions, based on a quick electro-codeposition of these two metal ions on the surface of the modified electrode (CMC-GCE). Investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FT-IR), both CMC (with good film-forming ability) and bismuth (with well-defined stripping signal) were found to be well complexed with target cadmium, leading to vital signal amplification for cadmium detection at a sub-nanomolar level. Under the optimal conditions, the proposed sensor exhibited a good linear stripping signal response to cadmium (Ⅱ) ion, in a concentration range of 0.001 μmol/L–1 μmol/L with a limit of detection of 0.75 nmol/L (S/N = 3). Meanwhile, the results demonstrate that this novel electrochemical sensor has excellent sensitivity and reproducibility, which can be used as a promising detection technique for testing natural samples such as tap water.

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