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IJSTR >> Volume 10 - Issue 5, May 2021 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Fast And Reliable Determination Of Organic Compounds In Washing Water Samples Using Electrochemical-Based Measurements Of Chemical Oxygen Demand

[Full Text]



Eman R. Darwish, Sayed M.N. Moalla, Nasser M. Hosny, Alaa S. Amin,Heidi B. Martin,Haitham Kalil



Environmentally Friendly,Cyclic Voltammetry, Fast-scan,Organic Compounds, Oxidation, Traditional COD,Washing Water



Chemical Oxygen Demand (COD) is referring to the total amount of oxygen used for a chemical oxidation of organic compounds in a water sample. COD stands as an important tool for water safety and water quality standard. Fast-scan cyclic voltammetry (FSCV) has been reported as a simple and a rapid method for electrochemical measurements, particularly for neurotransmitter compounds in brain and in biological systems. The explicit characteristics of FSCV comes from the ability to measure small volumes of the analyte by adapting carbon-fiber microelectrode as a working electrode at a scan rate of milliseconds. In this research project, FSCV has shown promising results as an alternative method that correlates with the traditional measurementsof COD. Traditionally, COD was more often estimated using oxidizing agents and toxic chemical reagents that have a serious impact on our environment. Unlike traditional oxidation methods, FSCV has been utilized as a powerful an electrochemical tool that allows for measuring COD of Iceberg lettuce washing water samples in a few minutes, without using any oxidizing or toxic reagents. In addition, FSCV measurements showed a high recovery percentage for all washing water samples of the two batches, low organic materials, and high organic materials. Thus, FSCV provides a fast and reliable platform to measure all chemically oxidizable organic compounds in lettuce washing water samples that is directly related to COD, butas an environmentally friendly model based on the oxidation potential.



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