Smartphone-based colorimetric determination of fluoride anions using polymethacrylate optode

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Smartphone-based colorimetric determination of fluoride anions using polymethacrylate optode	1 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1016/j.talanta.2021.122103

Title: Smartphone-based colorimetric determination of fluoride anions using polymethacrylate optode
Creator: Saranchina, Nadezhda V.
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Slizhov, Yuri G.
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Vodova, Y. M.
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Murzakasymova, N. S.
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Ilyina, A. M.
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Gavrilenko, Nataliya A.
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Gavrilenko, Mikhail A.
Date: 2021
DOI: 10.1016/j.talanta.2021.122103
Description: We developed a new transparent polymer optode based on polymethacrylate with Zr(IV) and alizarin red complex immobilized into it for digital colorimetric and solid-phase spectrophotometric determination of fluoride anions. The matrix changes its colour from purple to yellow after it contacts fluoride anion. We developed a processing algorithm for coloured images which helps calculate mean value for the RGB colour-coordinate system in a selected optode image and translates it into a fluoride concentration value. The analytical signal of the suggested method has a linearity range of 0.1–30 mg⋅L−1 with the detection limit 0.03 mg⋅L−1. Compared to other methods, the modified polymethacrylate matrix is actually a ready-to-use colorimetric system offering rapid results for drinking water quality control.