Effective stereoselective approach to substituted 1,4-dioxane-2,5-diones as prospective substrates for ring-opening polymerization

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Synthesis of tritium-labeled PAM-43

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Synthesis and electrochemical study of 2-carbamoyl-4,5-dihydro-1,3,4-thiadiazole-containing ligands and their complexes with Cuii, Coii and Niii

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The Henry reaction catalyzed by zeolitic imidazolate framework ZIF-8

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Sol-gel made titanium dioxide nanostructured thin films as gas-sensing materials for the detection of oxygen

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Anodic corrosion of gold in solutions of diaminoalkanes

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Three-dimensional grids based on graphene oxide and 3,3’,4,4’-tetraaminodiphenyl oxide for supercapacitor electrodes

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EPR spectroscopy determination of the rate constants for addition of [O4S]•– radical anion to double bonds

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The effect of preparation method on the defect structure and luminescence properties of γ-Al2O3

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Electrochemical Determination of Malathion on an Acetylcholinesterase-Modified Glassy Carbon Electrode

An acetylcholinesterase biosensor based on glassy carbon electrode modified with carbon black and pillar[5]arene was used for the determination of malathion after its preliminary oxidation. The contributions of enzyme immobilization and oxidation conditions to the improvement of analytical characteristics of the biosensor were considered and quantified. In optimal conditions, the acetylcholinesterase biosensor allows the determination of 40 pM of malathion with 10?min of incubation and 15 pM with 30?min of incubation. The sensitivity of immobilized enzyme was found to be higher than that the free enzyme due to sorbtional accumulation in the modifier layer. Incomplete oxidation of malathion decreased the sensitivity of the assay. The developed acetylcholinesterase biosensor was validated for the determination of malathion residues in grapes, wine, and peanuts. The recoveries calculated against a high-performance liquid chromatography assay were between 80 and 120% due to possible matrix effects and the simplified extraction protocols.