Alternatively for mipdatabase quick searches go here

Custom Search

Abstract: Polymeric materials containing artificial recognition sites for pesticide, insecticide and chemical agent detection in water have been prepared. They are based on molecular imprinting techniques combined with sensitized Ianthanide luminescence and function by selectively binding the phosphonate group to a functionality-imprinted polymer possessing a bound europium ion. The polymer is coated onto an optical fiber, and the luminescence excited at 465.8nm and monitored between 550-700nm. A fiber-optic spectrometer is used to monitor the changes in luminescence that result when the analyte is reversibly bound to the co-polymer. The limits of detection for this type of sensor are in the low parts per trillion (ppt) in solution with linear ranges from low parts per trillion to parts per million. The sensors exhibit the same recognition characteristics over several months of use with response times of less than 15 minutes. Selectivity of the sensors against other chemically similar compounds has been demonstrated