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A novel method for calibration of AF4 channels for hydrodynamic radius determination: the nanoemulsion method (featuring MALS)
Lund University.
Lund University.
Lund University.
Lund University.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Journal of Chromatography A, ISSN 0021-9673, Vol. 1533, s. 155-163Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study suggests a novel method for determination of the channel height in asymmetrical flow field-flow fractionation (AF4), which can be used for calibration of the channel for hydrodynamic radiusdeterminations. The novel method uses an oil-in-water nanoemulsion together with multi angle lightscattering (MALS) and elution theory to determine channel height from an AF4 experiment. The methodis validated using two orthogonal methods; first, by using standard particle elution experiments and, sec-ondly, by imaging an assembled and carrier liquid filled channel by x-ray computed tomography (XCT). It is concluded that the channel height can be determined with approximately the same accuracy aswith the traditional channel height determination technique. However, the nanoemulsion method canbe used under more challenging conditions than standard particles, as the nanoemulsion remains stablein a wider pH range than the previously used standard particles. Moreover, the novel method is also morecost effective.

sted, utgiver, år, opplag, sider
2018. Vol. 1533, s. 155-163
Emneord [en]
Flow field-flow fractionation; AF4; Multi angle light scattering; Nanoemulsion; X-ray computed tomography; Channel height
HSV kategori
Identifikatorer
URN: urn:nbn:se:hkr:diva-17707DOI: 10.1016/j.chroma.2017.12.026ISI: 000424187500017PubMedID: 29248348OAI: oai:DiVA.org:hkr-17707DiVA, id: diva2:1167223
Tilgjengelig fra: 2017-12-18 Laget: 2017-12-18 Sist oppdatert: 2018-03-05bibliografisk kontrollert

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