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Dipsticks and sensor microtiterplate for determination of copper (II) in drinking water using reflectometric RGB readout of digital images, fluorescence or eye-vision

Khairy, Gasser M. ; Duerkop, Axel


A dipstick and a sensor microtiterplate were developed for fast determination of Cu(II) in drinking water with good sensitivity. The dipsticks are based on filter paper that contains a chromogenic probe (cuprizone) along with a red fluorescent dye (sulforhodamine 101) incorporated inside a hydrogel. Upon reaction with Cu(II), the visible color of the spots shifts from pink over blue to green. ...


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