SEPARATION OF POLYCYCLIC AROMATIC HYDROCARBON METABOLITES BY γ-CYCLODEXTRIN-MODIFIED MICELLAR ELECTROKINETIC CHROMATOGRAPHY
作者:
Xin Xu,
RobertJ. Hurtubise,
期刊:
Journal of Liquid Chromatography & Related Technologies
(Taylor Available online 2000)
卷期:
Volume 23,
issue 11
页码: 1657-1670
ISSN:1082-6076
年代: 2000
DOI:10.1081/JLC-100100442
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A γ-cyclodextrin (γ-CD) modified micellar electrokinetic capillary chromatographic (CD-MEKC) method has been developed to separate PAH metabolites. Baseline resolution of six acidic PAH metabolites was achieved within 14 min. The effects of several separation parameters were investigated in detail. These were the γ-CD concentration, sodium dodecyl sulfate (SDS) concentration, pH of the buffer, organic modifier, and urea concentration. The apparent capacity factors (k′app) increased linearly with SDS concentration which was consistent with theory. Possible mechanisms that account for the differences in the apparent distribution coefficients (Kapp) were proposed. The CD-MEKC method was compared with a capillary zone electrophoresis (CZE) method that we developed previously for the separation of the PAH metabolites.
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