期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1217, 期 48, 页码 7507-7513出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2010.09.076
关键词
On column peak focusing; Large sample injection volumes; Capillary liquid chromatography; Chlorophenoxy acid herbicides; Heterocyclic aromatic amines; Carbamate insecticides
资金
- Spanish Ministerio de Ciencia y Tecnologia (Direccion General de Investigacion) [CTQ2008-05263/BQU]
- Universidad Complutense de Madrid [CCG07-UCM/SAL-2828]
This paper describes a multivariate approach to study the effect on chromatographic conditions and to optimize such conditions in capillary liquid chromatography when high injection volumes are required Several separations have been evaluated by using isocratic and gradient solvent elution as well as isocratic elution combined with temperature programming In this study easily ionisable organic compounds with low log P have been used as representative analytes Injection volume and nature of the injection solution have been evaluated in order to increase the sensitivity (peak area) and column performance (N values) The equations obtained by multiple linear regressions and response surfaces allow achieving the optimum on-column focusing conditions for chlorophenoxy acids carbamates and heterocyclic amines (C) 2010 Elsevier B V All rights reserved
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