title: Automated liquid-liquid extraction by pneumatic recirculation on a centrifugal microfluidic platform.
abstract: In this technical note, a liquid-liquid extraction technique was performed using pneumatic liquid recirculation on a centrifugal microfluidic device. Non-contact pneumatic pumping enabled a multi-cycle liquid-liquid 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 ± 10 μL/min. A recycling process such as the one demonstrated would be difficult to implement in a conventional centrifugal microfluidic system.
authors: Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8.
authors: Alexei
authors: A
authors: Kazarine
authors: Matthew C R
authors: MC
authors: Kong
authors: Erin J
authors: EJ
authors: Templeton
authors: Eric D
authors: ED
authors: Salin