Abstract
Due to their wide applications as insecticides, pesticides, chemical warfare agents, etc., detection of organophosphorus compounds is of great importance. This paper deals with application of polyaniline conducting polymer (PANi) as a sensor material for detection of some agricultural organophosphorus compounds that are commonly used as insecticides and pesticides. The compounds employed in this investigation are dichlorvos, trichlorophon, and chlorpyrifos. The effects of some important parameters such as concentration, thickness of the polymer film, etc., on electrical conductivity and conductivity stability for these compounds have also been investigated. In situ electrical conductivity measurements were performed using a standard direct-current (DC) four-point probe technique. It was found that adsorption and desorption of these compounds on PANi film cause measurable change in the resistance of conducting polymers.
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Hosseini, S.H., Khalkhali, R.A. & Noor, P. Study of polyaniline conducting/electroactive polymer as sensor for some agricultural phosphorus pesticides. Monatsh Chem 141, 1049–1053 (2010). https://doi.org/10.1007/s00706-010-0374-5
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DOI: https://doi.org/10.1007/s00706-010-0374-5