scholarly journals Electrochemical Determination of Chemical Oxygen Demand Using Ti/TiO2 Electrode

2016 ◽  
pp. 9812-9821 ◽  
Author(s):  
Yongxian Ge ◽  
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Electrochemical Determination ◽  
Tio2 Electrode

scholarly journals A Nafion Film Cover to Enhance the Analytical Performance of the CuO/Cu Electrochemical Sensor for Determination of Chemical Oxygen Demand

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 669 ◽  
Author(s):  
Tanya Carchi ◽  
Byron Lapo ◽  
José Alvarado ◽  
Patricio J. Espinoza-Montero ◽  
Jordi Llorca ◽  
...  
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Linear Sweep Voltammetry ◽  
Copper Surface ◽  
Electrochemical Determination ◽  
Electrochemical Characteristics ◽  
Wide Range ◽  
Nafion Film ◽  
Electrochemical Electrode

We modified and evaluated the performance of a CuO/Cu electrochemical electrode for chemical oxygen demand (COD) determination by covering it with a Nafion (Nf) film. The resulting modified CuONf/Cu electrode sensor was used for the electrochemical determination of COD in river, slaughterhouse and estuarine water samples in order to evaluate its performance for this particular task. It was compared with the CuO/Cu sensor with no Nafion. The main electrochemical characteristics of interest, resistance, sensitivity, accuracy and reproducibility, were assessed by means of Linear Sweep Voltammetry using glucose as a standard. Results of these essays indicate that the procedure used produced smooth and firmly attached Nf films covering the whole copper surface. This sensor was shown to be resistant to interferences and effective in electro-oxidation of a wide range of organic compounds and therefore very useful for COD determination. Using the newly developed CuONf/Cu electrode an analytical linear range of 50 to 1000 mg·L−1 COD, with a detection limit of 2.11 mg·L−1 (n = 6) COD was achieved. The comparison shows that the CuONf/Cu sensor is more appropriate for COD determination than its counterpart with no Nafion.

Ti/TiO2 Electrode Preparation Using Laser Anneal and Its Application to Determination of Chemical Oxygen Demand

2006 ◽  
Vol 18 (10) ◽  
pp. 1014-1018 ◽  
Author(s):  
Jiaqing Li ◽  
Lei Zheng ◽  
Luoping Li ◽  
Guoyue Shi ◽  
Yuezhong Xian ◽  
...  
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Tio2 Electrode ◽  
Laser Anneal

Electrochemical determination of chemical oxygen demand on functionalized pseudo-graphite electrode

2019 ◽  
Vol 851 ◽  
pp. 113448 ◽  
Author(s):  
Humayun Kabir ◽  
Haoyu Zhu ◽  
Ricardo Lopez ◽  
Nolan W. Nicholas ◽  
David N. McIlroy ◽  
...  
Keyword(s):  
Chemical Oxygen Demand ◽  
Graphite Electrode ◽  
Oxygen Demand ◽  
Electrochemical Determination
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