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An uncomplicated method for the detection of organophosphorous pesticide characterized by a thione moiety (P = S) was developed, and chlorpyrifos was used as an example. It was based on the detection of thiocholine generated by acetylcholinesterase. Organophosphorothionates slightly inhibited acetylcholinesterase, and P = S in chlorpyrifos was oxidized into P = O to improve the toxicity. Optimized...
A highly selective, sensitive, fast, and stable amperometric sensor for the determination of hydrogen peroxide residues in aseptic milk is presented. To fabricate this amperometric sensor, a thin film of Prussian blue was first electrodeposited on a glassy carbon electrode and then a Nafion polymer layer was formed on the top. It was found that Nafion film greatly improves the anti-interference ability...
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