Journal ArticleDOI
Sensitive detection of pesticides using a differential ISFET-based system with immobilized cholinesterases
A.M. Nyamsi Hendji,Nicole Jaffrezic-Renault,Claude Martelet,Paul Clechet,A.A. Shlu'ga,V. I. Strikha,L.I. Netchiporuk,Alexey P. Soldatkin,W.B. Wlodarski +8 more
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TLDR
The optimized parameters for the measurement procedure were determined and the detection limits were found to be 10 −12 M for DFP and 10 −6 M for paraoxon-methyl and trichlorfon.About:
This article is published in Analytica Chimica Acta.The article was published on 1993-09-01. It has received 90 citations till now. The article focuses on the topics: Immobilized enzyme.read more
Citations
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Fluorescent Detection of Chemical Warfare Agents: Functional Group Specific Ratiometric Chemosensors
Shi-Wei Zhang,Timothy M. Swager +1 more
TL;DR: Indicators providing highly sensitive and functional group specific fluorescent response to diisopropyl fluorophosphate (DFP, a nerve gas (G-agent) simulant) are reported.
Journal ArticleDOI
Review on the use of enzymes for the detection of organochlorine, organophosphate and carbamate pesticides in the environment.
TL;DR: Enzymatic methods of detection of pesticides can serve as a tool for screening large samples which can be followed up with the more traditional chromatographic methods of analysis.
Journal ArticleDOI
Biosensors for chemical and biological agents of defence interest
TL;DR: Current developments in biosensors for toxic materials of defence interest with particular emphasis on the biological element of such devices are discussed, including methods for improving the stability, extending the range and altering the binding characteristics of sensing molecules.
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Enzyme monolayer-functionalized field-effect transistors for biosensor applications
TL;DR: The enzyme-thin-layered FET devices as biosensors demonstrated capability to sense urea, glucose, acetylcholine and N -acetyl- l -tyrosine ethyl ester, respectively, results from the low diffusion barrier for the substrate penetration to the biocatalytic active sites and minute isolation of the pH-sensitive gate surface from the bulk solution.
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ISFET Based Microsensors for Environmental Monitoring
TL;DR: The technologies used to fabricate ISFETs and a review of the role of ISFets in the environmental field are presented and they are particularly helpful for measuring pH and other ions in small volumes.
References
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Journal ArticleDOI
Sensitive detection of pesticides using amperometric sensors based on cobalt phthalocyanine-modified composite electrodes and immobilized cholinesterases
Petr Skládal,Marco Mascini +1 more
TL;DR: The determination of organophosphate and carbamate pesticides was carried out using cobalt phthalocyanine-modified carbon epoxy composite electrodes coupled with acetyl- or butyrylthiocholine as substrates and detection limits are similar as those obtained when analyses were performed using free cholinesterase and 10 min incubation with inhibitor.
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Parathion antibodies on piezoelectric crystals
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Whole-cell biosensors for environmental monitoring
TL;DR: The development of a mediated amperometric biosensor, incorporating the cyanobacterium Synechococcus as the biocatalyst, for on-line herbicide monitoring is described, able to detect a wide range of herbicides with sites of action on the photosynthetic electron transport chain.
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Biosensor for detection of organophosphate and carbamate insecticides
TL;DR: An enzyme sensor for the determination of organophosphate and carbamate insecticides is described, based on the coimmobilization and sequential enzymatic reactions of acetylcholinesterase and choline oxidase.
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Pesticide-sensitive ISFET based on enzyme inhibition
TL;DR: A simple method for an enzyme inhibition test is described, where the enzyme acetylcholinesterase is immobilized onto the pH-sensitive gate area of an ISFET and the decrease in enzyme activity after incubation in a solution of dichlorvos as inhibitor is detected potentiometrically.