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Comparison of two capillary electrophoresis online stacking modes by analysis of polycyclic aromatic hydrocarbons in airborne particulates
Author(s) -
Song GuanQun,
Peng ZhenLei,
Lin JinMing
Publication year - 2006
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200500364
Subject(s) - chrysene , pyrene , phenanthrene , stacking , anthracene , chemistry , fluorene , capillary electrophoresis , particulates , naphthalene , chromatography , analytical chemistry (journal) , environmental chemistry , photochemistry , organic chemistry , polymer
Naphthalene, fluorene, pyrene, anthracene, phenanthrene, and chrysene were successfully separated by CD‐modified MEKC (CD‐MEKC) using 20 mM borate (pH 9.0) containing 90 mM SDS and 75 mM β‐CD. Two online stacking methods, i. e. , sweeping and field‐enhanced sample injection (FESI), were explored to enhance the detection sensitivity. The influences of some crucial parameters in sweeping and FESI procedures were investigated. For FESI method, a plug of water and low‐conductivity sample matrix was used to increase the stacking efficiency. Compared with the sweeping method, FESI can increase the sensitivity in the range of 10–20‐fold. The proposed method was used for the analysis of polycyclic aromatic hydrocarbons in airborne particulates.