Dependence of Nonlinear Electrophoresis on Particle Size and Electrical Charge,Analytical Chemistry

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Dependence of Nonlinear Electrophoresis on Particle Size and Electrical Charge
Analytical Chemistry ( IF 6.7 ) Pub Date : 2023-04-12 , DOI: 10.1021/acs.analchem.2c05595
Olivia D Ernst ₁ , Alaleh Vaghef-Koodehi ₁ , Curran Dillis ₁ , Adrian Lomeli-Martin ₁ , Blanca H Lapizco-Encinas ₁

Affiliation

This study focuses on the dependence of nonlinear electrophoretic migration of particles on the particle size and particle electrical charge. This is the first report of the experimental assessment of the mobilities of the nonlinear electrophoretic velocity of colloidal polystyrene microparticles under two distinct electric field dependences. A total of nine distinct types of polystyrene microparticles of varying size and varying electrical charge were divided into two groups to study separately the effects of particle size and the effects of particle charge. The mobilities of the nonlinear electrophoretic velocity of each particle type were determined in both the cubic and 3/2 regimes (μ_EP,NL⁽³⁾ and μ_EP,NL^(3/2)). The results unveiled that both mobilities had similar relationships with particle size and charge. The magnitude of both μ_EP,NL⁽³⁾ and μ_EP,NL^(3/2) increased with increasing particle size and decreased with increasing magnitude of particle charge. However, the observed trends were not perfect as discussed in the Results and Discussion section but still provide valuable information. These findings will aid in the design of future size-based and charge-based separations of particles and microorganisms.

中文翻译：

非线性电泳对粒径和电荷的依赖性

本研究的重点是粒子的非线性电泳迁移对粒子大小和粒子电荷的依赖性。这是胶体聚苯乙烯微粒在两种不同电场依赖性下的非线性电泳速度迁移率实验评估的第一份报告。将总共九种不同大小和不同电荷的聚苯乙烯微粒分为两组，分别研究粒径的影响和粒子电荷的影响。每种粒子类型的非线性电泳速度的迁移率均在立方和 3/2 范围内确定 (μ _EP,NL⁽³⁾和 μ _EP,NL^(3/2)). 结果表明，两种迁移率与粒径和电荷的关系相似。_{μ EP,NL}⁽³⁾和 μ _EP,NL^(3/2)的大小都随着颗粒尺寸的增加而增加，并随着颗粒电荷量的增加而减少。然而，观察到的趋势并不像结果和讨论部分所讨论的那样完美，但仍然提供了有价值的信息。这些发现将有助于设计未来基于尺寸和基于电荷的颗粒和微生物分离。

更新日期：2023-04-12

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