Fig. 4

Chromatogram of repaglinide A before and B after vortex assisted-DLLME. Microextraction conditions: extractant type: octanol, extractant volume: 30μL, disperser type: acetonitrile, disperser volume: 100 μL, vortex time: 1 min, centrifugation time: 5 min, diluent: pH = 8