Electrochemical Testing: A Sensitive and Specific Analytical Technique

An electrochemical test, also known as an electrotest, is a type of analytical technique used to determine the presence and concentration of certain substances in a sample. It involves measuring the current that flows between two electrodes immersed in the sample, which is influenced by the chemical reactions occurring in the sample.

In an electrochemical test, one electrode is called the working electrode, and the other is called the reference electrode. The working electrode is made of a material that undergoes a specific chemical reaction when exposed to the sample, while the reference electrode is made of a material that does not react with the sample. By comparing the current flowing between the two electrodes, the concentration of the substance being tested can be determined.

Electrochemical tests are commonly used in various fields such as environmental monitoring, medical diagnostics, and food safety testing. They offer several advantages over traditional analytical techniques, including high sensitivity, specificity, and speed. Additionally, they can be automated and integrated into portable devices, making them ideal for field measurements and point-of-care testing.