Recent developments in nanomaterial-based electrochemical sensors for measuring nitrate and nitrite in the aqueous system

Providing safe drinking water requires a series of tests that measure the allowable amounts of salts and components in the water to be within the standard recommended by the World Health Organization. Among the components in water, nitrate and nitrite are the most effective substances on human health and agriculture. Therefore, to measure these values, we need electrochemical sensors that have the basic parameters of an ideal sensor (۴S) including high sensitivity, good chemical stability, selectivity and good response speed. Therefore, to achieve these parameters, nanotechnology can be the best option to achieve these goals. By entering the nano range and reducing the dimensions of the material, new properties, such as increasing the surface to volume ratio of the material, increase the reactivity of the material. In this research, the electrochemical nanosensors of nitrate and nitrite, which are made with nanotechnology, have been investigated.

Keywords:

Electrochemical nanosensor , Nanotechnology , Nitrate , Nitrite , Nanomaterials , Water treatment , Carbon nanotubes