https://doi.org/10.1351/goldbook.10315
Extraction by insertion of the sample solution as equal-size droplets (segments) in a flowing stream of immiscible extraction phase.
Notes:
- The characteristic components of the system are the segmenter (creates the droplets in the solvent stream); the extraction coil (provides sufficient time for transfer of target analytes to the extraction solvent); and the phase separator (reconstitutes the sample solution and extraction solvent into two separate streams).
- A typical apparatus for segmented flow extraction is shown in figure below.
Typical segmented flow extraction manifold. C, carrier or liquid phase for sample; R, reagent (optional); P, propulsion unit; S, sample; IV, injection valve; MC, mixing coil; DB, displacement bottle (functions as a constant volume pump); ORG, organic solvent; SG, segmenter; EC, extraction coil; PS, phase separator; D, detector (optional); RC, restriction coil; and W, waste.