Biosensors for organophosphorus and carbamates pesticides detection from water samples

Anthropogenic pollutants through different sources increasingly impact aquatic ecosystems around the world, rivers, lakes, estuaries and coastal areas: agricultural, industrial and urban discharges, atmospheric deposition, and terrestrial drainage. The lakes are under threat from eutrophication, a huge decline in the number of native fish species caused by several factors including loss of biodiversity, over-fishing and pollution have been recently documented. Increasing usage of pesticides in the adjacent agricultural areas is currently considered among the most emergent phenomena of chemical contamination in the lake. Some pesticides may form complexes with acetylcholinesterase and stop the enzyme phosphorylation on the active sites level. So it is possible to determine the presence of these constituents by inhibition methods. The present paper is a modest contribution to the study regarding the enzymatic methods of quantification of the organophosphorus and carbamates pesticides in various matrices.