Potentiometric detection of pesticides in water samples

A capacitive field-effect sensor for the direct determination of organophosphorus pesticides

“…Biosensors to detect these neurotoxins, has been an actively researched area. The majority of biosensors to date is based on the inhibition of acetylcholinesterase or butyrylcholinesterase integrated with electrochemical (potentiometric and amperometric) and optical transducers [1][2][3]. Although sensitive, these biosensors suffer from several limitations: poor selectivity, multi-step indirect determination, and irreversible inhibition by many compounds, to name a few.…”

Model of a pH‐Based Potentiometric Biosensor Immobilizing Organophosphorus Hydrolase

“…Enzymatic biosensors have attracted much attention on the development of these biosensors for determination of OPs, but most of the work is focused on immobilized acetylcholinesterase (AChE) or butyrylcholinesterase (BChE) integrated with electrochemical (potentiometric or amperometric) or optical transducers [1,2]. The detection is based on the inhibition effect of OPs on AChE or BChE activity.…”

Determination of organophosphate and carbamate pesticides based on enzyme inhibition using a pH-sensitive fluorescence probe

“…The development of biosensors based on enzyme inhibition is a matter of considerable interest, and many kinds of biosensors were reported in the past decade which could be mainly divided into three types according to the difference of transducers: potentiometric [7][8][9][10], amperometric [11][12][13][14][15][16][17], and optical biosensors [18][19][20][21]. However, these biosensors often have relatively short longevities, which greatly limit their uses in practice, and the detections often need more than half an hour and several milliliters of samples.…”