Science and Technology Production
A Selective Chromogenic and Fluorogenic Film Kit for Determination of Cyanide in Water and Soil Samples
Article
Authorship:
Reinick, Ana Paula ; Gutierrez, Leandro Gabriel ; Cravero, Facundo ; VAILLARD, SANTIAGO EDUARDO ; Ferretti, Cristián AlejandroDate:
2025Publishing House and Editing Place:
JOHN WILEY & SONS INCMagazine:
JOURNAL OF APPLIED POLYMER SCIENCE JOHN WILEY & SONS INCSummary *
A single, quick, and effective film kit for the quantification of cyanide ions in water and soil samples was developed. The film kit consists of a polymeric membrane of sodium carboxymethyl cellulose and hydroxypropyl methyl cellulose that contains matrix dispersed SBA-15particles impregnated with the molecular sensor. The molecular sensor is highly selective for the chromogenic and fluorometric detection of CN−, whose recognition mechanism is based on the nucleophilic addition to the dicyanovinyl group linked to an anthracenyl moiety. The analytical evaluation was carried out for quantification of CN− with the film kit and with the free sensor using UV–vis spectroscopy and fluorescence spectroscopy. The detection limit for the film kit by fluorescence spectroscopy was 0.6 μM CN−, which is lower than the WHO guideline for cyanide in drinking water. This method was successfully validated, and the application in real water and soil samples gave excellent results, suggesting that the film kit is versatile for determining CN− in these media. Information provided by the agent in SIGEVAKey Words
sensor and actuatorsfilmsoptical propertiesmolecular recognition