Real-Time Volumetric Phase Monitoring: Advancing Chemical Analysis by Countercurrent Separation

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Abstract
Countercurrent separation (CCS) utilizes the differential partitioning behavior of analytes between two immiscible liquid phases. We introduce the first platform (“CherryOne”) capable of real-time monitoring, metering, and control of the dynamic liquid–liquid CCS process. Automated phase monitoring and volumetrics are made possible with an array of sensors, including the new permittivity-based phase metering apparatus (PMA). Volumetric data for each liquid phase are converted into a dynamic real-time display of stationary phase retention (Sf) and eluent partition coefficients (K), which represent critical parameters of CCS reproducibility. When coupled with the elution–extrusion operational mode (EECCC), automated Sf and K determination empowers untargeted and targeted applications ranging from metabolomic analysis to preparative purifications.
Funding Information
  • National Center for Complementary and Alternative Medicine (R43AT004534, R44AT004534)

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