Study of Electrophoresis Process in Magnetic Colloids by Magnetic Methods.

IF 2.5 3区生物学 Q2 BIOCHEMICAL RESEARCH METHODS

ELECTROPHORESIS Pub Date : 2025-10-07 DOI:10.1002/elps.70017

Yurii I Dikansky, Andrey S Drozdov, Dmitry S Dorozhko

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Abstract

Electrokinetic phenomena play a vital role in the study of colloidal nanoparticles, offering significant insights and applications across a wide range of fundamental research and practical uses. It is crucial to recognize the extensive research on various types of nanomaterials, including polymer latexes, quantum dots, and biomolecules. However, there is a significant gap in the study of magnetic systems. Such materials have immense potential and can greatly benefit from both magnetophoretic and electrophoretic techniques. In this work, the electrophoretic behavior of water-based magnetic fluids was investigated, focusing on how additional magnetic field exposure affects their properties. The studies conducted utilized magnetic measurements that emerged from the presence of colloidal particles within the examined systems, which exhibited both charge and magnetic moment. The magnetic susceptibility and magnetization of colloidal particles precipitate formed on one of the electrodes were measured. The thickness of the formed precipitate on the electrode can be confidently estimated through micrometric measurements as well as by analyzing its magnetic susceptibility during electrophoresis. A formula for calculating the electrophoretic velocity based on the results of magnetic measurements was obtained. Estimates of zeta potential and charge of colloidal particles were carried out. The electrophoresis process in these systems can be effectively regulated by an inhomogeneous magnetic field, leading to complete compensation.

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磁性胶体电泳过程的磁法研究。

电动现象在胶体纳米颗粒的研究中起着至关重要的作用，在广泛的基础研究和实际应用中提供了重要的见解和应用。重要的是要认识到各种类型的纳米材料的广泛研究，包括聚合物乳胶、量子点和生物分子。然而，在磁系统的研究中有一个显著的空白。这种材料具有巨大的潜力，可以从磁电泳和电泳技术中获益。在这项工作中，研究了水基磁性流体的电泳行为，重点研究了额外磁场暴露对其性能的影响。这项研究利用了磁性测量，这些测量来自于被检测系统中胶体粒子的存在，它们同时表现出电荷和磁矩。测量了在其中一个电极上形成的胶体颗粒的磁化率和磁化强度。通过显微测量和电泳过程中对其磁化率的分析，可以确定电极上形成的沉淀物的厚度。根据磁测结果，得到了计算电泳速度的公式。对胶体粒子的zeta电位和电荷进行了估计。在这些系统中，电泳过程可以被一个不均匀的磁场有效地调节，从而实现完全补偿。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ELECTROPHORESIS 生物-分析化学

CiteScore

6.30

自引率

13.80%

发文量

244

审稿时长

1.9 months

期刊介绍： ELECTROPHORESIS is an international journal that publishes original manuscripts on all aspects of electrophoresis, and liquid phase separations (e.g., HPLC, micro- and nano-LC, UHPLC, micro- and nano-fluidics, liquid-phase micro-extractions, etc.). Topics include new or improved analytical and preparative methods, sample preparation, development of theory, and innovative applications of electrophoretic and liquid phase separations methods in the study of nucleic acids, proteins, carbohydrates natural products, pharmaceuticals, food analysis, environmental species and other compounds of importance to the life sciences. Papers in the areas of microfluidics and proteomics, which are not limited to electrophoresis-based methods, will also be accepted for publication. Contributions focused on hyphenated and omics techniques are also of interest. Proteomics is within the scope, if related to its fundamentals and new technical approaches. Proteomics applications are only considered in particular cases. Papers describing the application of standard electrophoretic methods will not be considered. Papers on nanoanalysis intended for publication in ELECTROPHORESIS should focus on one or more of the following topics: • Nanoscale electrokinetics and phenomena related to electric double layer and/or confinement in nano-sized geometry • Single cell and subcellular analysis • Nanosensors and ultrasensitive detection aspects (e.g., involving quantum dots, "nanoelectrodes" or nanospray MS) • Nanoscale/nanopore DNA sequencing (next generation sequencing) • Micro- and nanoscale sample preparation • Nanoparticles and cells analyses by dielectrophoresis • Separation-based analysis using nanoparticles, nanotubes and nanowires.