Title: electro-osmotic hold-up time
Long Title: IUPAC Gold Book - electro-osmotic hold-up time
DOI: 10.1351/goldbook.ET06922
Status: current
Index: quantity

Definition
Time required for a liquid in a capillary to move due to electro-osmosis through the effective length of the capillary, \(L_{\rm{eff}}\). This time is usually measured as the migration time of a neutral compound, called an electro-osmotic flow marker which is assumed to have an electro-osmotic mobility that is negligible compared to that of the analyte.

Related Terms
- electro-osmosis: https://goldbook.iupac.org//terms/view/ET06891
- marker: https://goldbook.iupac.org//terms/view/M03705
- migration time: https://goldbook.iupac.org//terms/view/MT06924
- mobility: https://goldbook.iupac.org//terms/view/M03955

Source
- PAC, 2004, 76, 443. 'Terminology for analytical capillary electromigration techniques (IUPAC Recommendations 2003)' on page 447 (https://doi.org/10.1351/pac200476020443)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/ET06922/html
- json: https://goldbook.iupac.org/terms/view/ET06922/json
- xml: https://goldbook.iupac.org/terms/view/ET06922/xml

Citation: Citation: 'electro-osmotic hold-up time' 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.ET06922
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Accessed: 2025-12-12T21:32:40+00:00