Adsorption Preconcentration of Flavonoids on Ordered Mesoporous Silica Synthesized in the Presence of a Potential Adsorbate

IF 1 4区化学 Q4 CHEMISTRY, ANALYTICAL

Journal of Analytical Chemistry Pub Date : 2024-12-14 DOI:10.1134/S1061934824701259

A. S. Zavalyueva, S. I. Karpov, V. F. Selemenev

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Abstract

The application of nanostructured adsorbents in sample preparation (extraction and preconcentration) of multicomponent mixtures in the solid-phase extraction of organic compounds is gaining significant interest. This study examines the adsorption properties of ordered mesoporous analogues of SBA-15, synthesized in the presence of quercetin as a potential adsorbate. The work explores the specific features of the adsorption-based recovery and preconcentration of quercetin, dihydroquercetin, naringin, and rutin under dynamic conditions from acetonitrile solutions using the breakthrough curve method. The use of the generalized optimization criterion of adsorption preconcentration CE, within the framework of the Venitsianov–Tsysin model of dynamic adsorption preconcentration, taking into account the limiting (mixed-diffusion) stage of adsorption kinetics, enabled the evaluation of the efficiency of the adsorption preconcentration of flavonoids on the studied adsorbents. The results demonstrate that the use of ordered silica synthesized in the presence of a potential adsorbate significantly enhances concentration efficiency compared to nonstructured silicas or unmodified SBA-15 analogue samples.

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有序介孔二氧化硅合成物在潜在吸附剂作用下对黄酮类化合物的吸附预富集

纳米结构吸附剂在有机化合物固相萃取中多组分混合物的样品制备（萃取和预富集）中的应用越来越受到人们的关注。本研究考察了在槲皮素存在下合成的SBA-15有序介孔类似物的吸附性能。采用突破曲线法研究了动态条件下从乙腈溶液中吸附回收和富集槲皮素、二氢槲皮素、柚皮素和芦丁的具体特点。在动态吸附预富集的Venitsianov-Tsysin模型框架内，考虑到吸附动力学的极限（混合扩散）阶段，利用吸附预富集CE的广义优化准则，对黄酮类化合物在所研究吸附剂上的吸附预富集效率进行了评价。结果表明，与非结构化二氧化硅或未经改性的SBA-15类似样品相比，在潜在吸附物存在下合成的有序二氧化硅显著提高了浓缩效率。

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来源期刊

Journal of Analytical Chemistry 化学-分析化学

CiteScore

2.10

自引率

9.10%

发文量

146

审稿时长

13 months

期刊介绍： The Journal of Analytical Chemistry is an international peer reviewed journal that covers theoretical and applied aspects of analytical chemistry; it informs the reader about new achievements in analytical methods, instruments and reagents. Ample space is devoted to problems arising in the analysis of vital media such as water and air. Consideration is given to the detection and determination of metal ions, anions, and various organic substances. The journal welcomes manuscripts from all countries in the English or Russian language.