Abstract
Biosensors for the detection of low levels of pesticides were prepared by entrapment of different enzymes in polyvinyl-alcohol bearing styryl pyridinium groups (PVA-SbQ). The inhibition of aldehyde dehydrogenase (EC 1.2.1.5), acetolactate synthase (EC 4.1.3.18) and acetyl cholinesterase (EC 3.1.1.7) allows respectively the detection of dithiocarbamate fungicides (10−8 M), sulfonylurea herbicides (10−6 M) and organophosphorus insecticides (10−7 M). The detection is amperometrically carried out.
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