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Andreescu S, Avramescu A, Bala C, Magearu V, Marty JL: Detection of organophosphorus insecticides with immobilized acetylcholinesterase - comparative study of two enzyme sensors. Anal Bioanal Chem. 2002 Sep;374(1):39-45. Epub 2002 Jul 30.
Two-enzyme systems based on acetylcholinesterase (AChE) - a mono-enzyme system based on AChE, with p-aminophenyl acetate as substrate, and a bi-enzyme system based on AChE and tyrosinase, with phenyl acetate as substrate - have been studied for detection of organophosphate insecticides.
Screen-printed sensors were used to detect the organophosphorus pesticides paraoxon and chlorpyrifos ethyl oxon; the detection limits achieved with phenyl acetate as substrate were 5.2x10 (-3) mg L (-1) and 0.56x10 (-3) mg L (-1), respectively. |
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