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Journals / Turkish Journal of Chemistry / 2013 / Cilt: 37 - Sayı: 2

Potentiometric determination of some food additives and their binding to a polycationic species using polyion sensors

Nedime DÜRÜST
Ali KAYANSALAN
Pages
308–315
Publication Date
2013-02-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Dynamic ranges for the determination of polyanionic analytes were 2--20 m g/mL for CMC, 1--8 m g/mL for Xanth, 0.5--4 m g/mL for Alg, and 2--20 m g/mL for Carr.

📌 3 Key Takeaways

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Objective & Hypothesis:Polycation-sensitive membrane electrodes based on dinonylnaphthalene sulfonate (DNNS) were examined for the determination of some polyanions, namely xanthan (Xanth), alginate (Alg), carboxymethyl cellulose (CMC), and carrageenan (Carr).
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Key Findings & Data:The potentiometric titrations of polyanionic analytes yielded sharp end points and correlative stoichiometries.
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Conclusion & Impact:Dynamic ranges for the determination of polyanionic analytes were 2--20 m g/mL for CMC, 1--8 m g/mL for Xanth, 0.5--4 m g/mL for Alg, and 2--20 m g/mL for Carr.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Xanthan · alginate · carboxymethyl cellulose

Abstract

Polycation-sensitive membrane electrodes based on dinonylnaphthalene sulfonate (DNNS) were examined for the determination of some polyanions, namely xanthan (Xanth), alginate (Alg), carboxymethyl cellulose (CMC), and carrageenan (Carr). The potentiometric titrations of polyanionic analytes yielded sharp end points and correlative stoichiometries. After the determinations were successfully performed in saline, these polyanions were also determined in some food products consumed in Bolu (Turkey). In addition, the titration data were used to estimate the interactions between titrant and polyanionic analytes. The equilibrium constants, Keq, and the number of titrant binding sites (n) per mole of analyte polyanion were calculated using Scatchard plots. The accuracy of the assayed method was confirmed by recovery experiments in spiked samples. Dynamic ranges for the determination of polyanionic analytes were 2--20 m g/mL for CMC, 1--8 m g/mL for Xanth, 0.5--4 m g/mL for Alg, and 2--20 m g/mL for Carr. LOD values were

Özet

Polycation-sensitive membrane electrodes based on dinonylnaphthalene sulfonate (DNNS) were examined for the determination of some polyanions, namely xanthan (Xanth), alginate (Alg), carboxymethyl cellulose (CMC), and carrageenan (Carr). The potentiometric titrations of polyanionic analytes yielded sharp end points and correlative stoichiometries. After the determinations were successfully performed in saline, these polyanions were also determined in some food products consumed in Bolu (Turkey). In addition, the titration data were used to estimate the interactions between titrant and polyanionic analytes. The equilibrium constants, Keq, and the number of titrant binding sites (n) per mole of analyte polyanion were calculated using Scatchard plots. The accuracy of the assayed method was confirmed by recovery experiments in spiked samples. Dynamic ranges for the determination of polyanionic analytes were 2--20 m g/mL for CMC, 1--8 m g/mL for Xanth, 0.5--4 m g/mL for Alg, and 2--20 m g/mL for Carr. LOD values were

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Cite This Article

DÜRÜST, N., KAYANSALAN, A. (2013). Potentiometric determination of some food additives and their binding to a polycationic species using polyion sensors. Turkish Journal of Chemistry, Cilt: 37 - Sayı: 2, 308–315. https://ajindex.com/articles/184706

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