Demonstrating Electrophoretic Separation in a Straight Paper Channel Delimited by a Hydrophobic Wax Barrier

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• 作者：Chunxiu Xu ; Wanqi Lin ; Longfei Cai
• 刊名：Journal of Chemical Education
• 出版年：2016
• 出版时间：May 10, 2016
• 年：2016
• 卷：93
• 期：5
• 页码：903-905
• 全文大小：196K
• 年卷期：0
• ISSN：1938-1328

文摘

A demonstration is described of electrophoretic separation of carmine and sunset yellow with a paper-based device. The channel in the paper device was fabricated by hand with a wax pen. Electrophoretic separation of carmine and sunset yellow was achieved within a few minutes by applying potential on the channel using a simple and inexpensive power supply. This demonstration could not only motivate the students’ passion in learning analytical chemistry but also introduce two important analytical techniques (microfluidic paper-based analytical devices and electrophoresis) to the classroom. With further modification and improvement, this demonstration may be suitable for students to perform as a laboratory experiment in the teaching lab.