Sol-Gel Based Optical Chemical Sensor For Detection of Organophosphates and Method For Preparation Thereof


Ontology type: sgo:Patent     


Patent Info

DATE

N/A

AUTHORS

Aleksandra Lobnik

ABSTRACT

The present invention solves the technical problem of manufacturing process and design of optical chemical sensor, in which interaction of the indicator with the analyte allows quick and reliable spectrofluorimetric determination of organophosphates. The procedure for creation an optical chemical sensor with sol-gel membrane for detection of organophosphates, is characterized in that it begins with the preparation of the membrane so that the indicator C1, which is dissolved in ethanol (10−7 M), add tetraethoxysilane (TEOS) and methyltriethoxysilane (MTriEOS) and stirr in an ultrasonic bath for 10 minutes; to then add the catalyst solution (0.001 M HCI) and mix again in an ultrasonic bath for 20 minutes; to make coatings on the glass slides after 24 h of sol aging in a closed container at room temperature and so that the slide is dipped in the sol and slowly pulled out from it, and let to dry for 24 hours at room temperature to form a membrane; to wipe coating on one side slides before drying. More... »

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