Automated Liquid鈥揕iquid Extraction by Pneumatic Recirculation on a Centrifugal Microfluidic Platform

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• 作者：Alexei Kazarine ; Matthew C. R. Kong ; Erin J. Templeton ; Eric D. Salin
• 刊名：Analytical Chemistry
• 出版年：2012
• 出版时间：August 21, 2012
• 年：2012
• 卷：84
• 期：16
• 页码：6939-6943
• 全文大小：318K
• 年卷期：v.84,no.16(August 21, 2012)
• ISSN：1520-6882

文摘

In this technical note, a liquid鈥搇iquid extraction technique was performed using pneumatic liquid recirculation on a centrifugal microfluidic device. Non-contact pneumatic pumping enabled a multi-cycle liquid鈥搇iquid extraction process using aqueous iodine in a potassium iodide solution and hexadecane while requiring a minimal amount of space on the device. The extraction process was completely automated on the device following sample introduction and required only 50 s for each extraction cycle. The pumping rate achieved during liquid recirculation was 120 卤 10 渭L/min. A recycling process such as the one demonstrated would be difficult to implement in a conventional centrifugal microfluidic system.