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

• Chunxiu Xu ^[1] ; Wanqi Lin ^[1] ; Longfei Cai ^[1]
  1. [1] Hanshan Normal University

     Hanshan Normal University

     China

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 93, Nº 5, 2016, págs. 903-905
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • 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.