Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution

Capillary hydrodynamic fractionation (CHDF) with turbidity detection at a single wavelength is an analytical technique that is often used for sizing the submicrometric particles of hydrophobic colloids. This article investigates three sources of errors that affect the particle size distribution (...

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Autores principales: Vega, Jose Luis, Clementi, Luis Alberto
Formato: Artículo acceptedVersion
Lenguaje:Inglés
Publicado: 2018
Materias:
Capillary
hydrophobic colloids
Acceso en línea:http://hdl.handle.net/20.500.12272/3122
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-3122
record_format dspace
spelling I68-R174-20.500.12272-31222023-07-03T18:55:56Z Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution Vega, Jose Luis Clementi, Luis Alberto Capillary hydrophobic colloids Capillary hydrodynamic fractionation (CHDF) with turbidity detection at a single wavelength is an analytical technique that is often used for sizing the submicrometric particles of hydrophobic colloids. This article investigates three sources of errors that affect the particle size distribution (PSD) estimated by CHDF: diameter calibration errors, uncertainties in the particle refractive index (PRI), and instrumental broadening (IB). The study is based on simulated and experimental examples that involve unimodal and bimodal PSDs. Small errors in the diameter calibration curve can produce important deviations in the number average diameter due to systematic shifts suffered by the PSD modes. Moderate uncertainties in the PRI are unimportant in the analysis of unimodal PSDs, but in the specific case of bimodal PSDs, errors in the PRI can strongly affect the estimated number concentration of each mode. The typical IB correction (based on the IB function estimated from narrow standards) produces slightly erroneous average diameters but can lead to PSDs with underestimated widths and distorted shapes. In practice, the three investigated sources of errors can be present simultaneously, and uncertainties in the average diameters, the shape and width of the PSD, and the number concentration of the PSD modes are unavoidable. © 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Peer Reviewed 2018-09-14T22:27:15Z 2018-09-14T22:27:15Z 2013 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:ar-repo/semantics/artículo http://hdl.handle.net/20.500.12272/3122 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Condiciones de Uso libre desde su aprobación Atribución-NoComercial-CompartirIgual 4.0 Internacional application/pdf
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Capillary
hydrophobic colloids
spellingShingle Capillary
hydrophobic colloids
Vega, Jose Luis
Clementi, Luis Alberto
Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
topic_facet Capillary
hydrophobic colloids
description Capillary hydrodynamic fractionation (CHDF) with turbidity detection at a single wavelength is an analytical technique that is often used for sizing the submicrometric particles of hydrophobic colloids. This article investigates three sources of errors that affect the particle size distribution (PSD) estimated by CHDF: diameter calibration errors, uncertainties in the particle refractive index (PRI), and instrumental broadening (IB). The study is based on simulated and experimental examples that involve unimodal and bimodal PSDs. Small errors in the diameter calibration curve can produce important deviations in the number average diameter due to systematic shifts suffered by the PSD modes. Moderate uncertainties in the PRI are unimportant in the analysis of unimodal PSDs, but in the specific case of bimodal PSDs, errors in the PRI can strongly affect the estimated number concentration of each mode. The typical IB correction (based on the IB function estimated from narrow standards) produces slightly erroneous average diameters but can lead to PSDs with underestimated widths and distorted shapes. In practice, the three investigated sources of errors can be present simultaneously, and uncertainties in the average diameters, the shape and width of the PSD, and the number concentration of the PSD modes are unavoidable. © 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process
format Artículo
acceptedVersion
Artículo
author Vega, Jose Luis
Clementi, Luis Alberto
author_facet Vega, Jose Luis
Clementi, Luis Alberto
author_sort Vega, Jose Luis
title Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
title_short Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
title_full Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
title_fullStr Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
title_full_unstemmed Capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
title_sort capillary hydrodynamic fractionation of hydrophobic colloids: errors in the estimated particle size distribution
publishDate 2018
url http://hdl.handle.net/20.500.12272/3122
work_keys_str_mv AT vegajoseluis capillaryhydrodynamicfractionationofhydrophobiccolloidserrorsintheestimatedparticlesizedistribution
AT clementiluisalberto capillaryhydrodynamicfractionationofhydrophobiccolloidserrorsintheestimatedparticlesizedistribution
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