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Smartphone-based colorimetric determination of fluoride anions using polymethacrylate optode N. V. Saranchina, Y. G. Slizhov, Y. M. Vodova [et al.]

Contributor(s): Saranchina, Nadezhda V | Slizhov, Yuri G | Vodova, Y. M | Murzakasymova, N. S | Ilyina, A. M | Gavrilenko, Nataliya A | Gavrilenko, Mikhail AMaterial type: ArticleArticleContent type: Текст Media type: электронный Subject(s): фтор | полиметакрилатная матрица | иммобилизованные реагенты | твердофазная спектрофотометрия | цифровая колориметрияGenre/Form: статьи в журналах Online resources: Click here to access online In: Talanta Vol. 226. P. 122103 (1-5)Abstract: 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.
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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.

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