Estratégias de pré-concentração em eletroforese capilar (CE): parte 1. Manipulação da velocidade eletroforética do analito

Estratégias de pré-concentração em eletroforese capilar (CE): parte 1. Manipulação da velocidade eletroforética do analito

Alternative title Preconcentration strategies in capillary electrophoresis (CE): part 1. Manipulation of the analyte electrophoretic velocity
Author Moraes, Maria de Lourdes Leite de Autor UNIFESP Google Scholar
Moraes, Solange Leite de Google Scholar
Pereira, Elisabete Alves Google Scholar
Tavares, Marina Franco Maggi Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Universidade Federal de São Carlos
Abstract Capillary electrophoresis has become a well-established and routine-based separation technique. It is based on the differences between charged analyte mobility in aqueous or organic electrolytes. Its major limitation is the sensitivity due to small sample injection volumes and the narrow diameter of the capillaries, especially when UV detection is used. There are a number of ways to increase the concentration sensitivity. This report shows some on-line preconcentration strategies to perform it in free solution capillary electrophoresis that are based on manipulation of the analyte electrophoretic velocity during the sample introduction (stacking, field amplification and transient isotachophoresis).
Keywords capillary electrophoresis
preconcentration strategies
stacking
Language Portuguese
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Date 2009-01-01
Published in MORAES, Maria de Lourdes Leite de et al . Estratégias de pré-concentração em eletroforese capilar (CE): parte 1. Manipulação da velocidade eletroforética do analito. Quím. Nova, São Paulo , v. 32, n. 4, p. 1041-1046, 2009
ISSN 0100-4042 (Sherpa/Romeo, impact factor)
Publisher Sociedade Brasileira de Química
Extent 1041-1046
Origin http://dx.doi.org/10.1590/S0100-40422009000400036
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000267331400036
SciELO ID S0100-40422009000400036 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/4810

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