Monitor Calibrator as an Alternative to Spectrofluorimeter: Determination of Quinine in Beverages and Medicinal Preparations

M. V. Gorbunova; Горбунова М. В.; T. A. Terentev; Терентьев Т. А.; V. V. Apyari; Апяри В. В.; S. G. Dmitrienko; Дмитриенко С. Г.; Yu. A. Zolotov; Золотов Ю. А.

doi:10.31857/S0044450223030052

Monitor Calibrator as an Alternative to Spectrofluorimeter: Determination of Quinine in Beverages and Medicinal Preparations

Authors: Gorbunova M.V.¹, Terentev T.A.¹, Apyari V.V.¹, Dmitrienko S.G.¹, Zolotov Y.A.¹^,2
Affiliations:
1. Department of Chemistry, Lomonosov Moscow State University
2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Issue: Vol 78, No 3 (2023)
Pages: 223-230
Section: ORIGINAL ARTICLES
Submitted: 31.01.2025
URL: https://ruspoj.com/0044-4502/article/view/650162
DOI: https://doi.org/10.31857/S0044450223030052
EDN: https://elibrary.ru/FUJWPC
ID: 650162

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Abstract

A possibility of using a monitor calibrator for the determination of luminescent compounds is shown on an example of quinine. The determination is based on the irradiation of a sample with broadband radiation in the visible and near UV spectral regions from a built-in source exciting phosphor molecules and the simultaneous registration of the radiation incident on the detector. Measurement conditions are selected. Quinine can be determined in the range of 60−750 µM, the limit of detection is 20 µM. The determination is not affected by common inorganic ions, as well as sweeteners and acidity regulators present in many beverages. The developed method of determination is applicable to the analysis of carbonated drinks and drugs. Compared to a traditional spectrofluorimeter, monitor calibrator is characterized by compactness, mobility, ability of detecting luminescence in cuvettes of various sizes and shapes, and lower cost.

Keywords

monitor calibrator, fluorescence spectroscopy, quinine

References

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