Smartphone-based colorimetric determination of fluoride anions using polymethacrylate optode
2021; Elsevier BV; Volume: 226; Linguagem: Inglês
10.1016/j.talanta.2021.122103
ISSN1873-3573
AutoresN. V. Saranchina, Yuri G. Slizhov, Y.M. Vodova, Nazgul S. Murzakasymova, Anzhelika Mikhailovna Ilyina, Nataliya A. Gavrilenko, М. А. Гавриленко,
Tópico(s)Biosensors and Analytical Detection
ResumoWe 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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