Title: segmented flow extraction
Long Title: IUPAC Gold Book - segmented flow extraction
DOI: 10.1351/goldbook.10315
Status: current

Definition
Extraction by insertion of the sample solution as equal-size droplets (segments) in a flowing stream of immiscible extraction phase.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.

Notes
1) 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).
2) A typical apparatus for segmented flow extraction is shown in figure below.

Source
- PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 556 (https://doi.org/10.1515/pac-2015-0903)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/10315/html
- json: https://goldbook.iupac.org/terms/view/10315/json
- xml: https://goldbook.iupac.org/terms/view/10315/xml

Citation: Citation: 'segmented flow extraction' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.10315
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Accessed: 2026-04-21T11:10:54+00:00