Nitrite sensors, environmental

The first interest in the electroreduction of N02 or NO catalyzed by metal complexes is to model the activity of nitrite reductase enzymes.327 There is also an extensive growth in studies related to the development of metal complex-based electrochemical sensors for NO determination in biological and environmental samples 328 329 Nitrate disproportionates to nitric oxide and nitrate in aqueous solution. 

Environmental detection of toxic compounds harmful to human health, such as dihydroxybenzene, nitrite, nitrobenzene, and nitroaromatics in water, can also be carried out with sol-gel nanocomposite-based sensors. The electrochemical determination of these target analytes on a bare commercial solid electrode produces weak signals at high overpotentials. Taking advantage of the catalytic activity of metal nanoparticles, the sensitive electrochemical analysis of these... 

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