Journal
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
Volume 10, Issue 3, Pages 611-638Publisher
DE GRUYTER POLAND SP Z O O
DOI: 10.2478/s11532-012-0007-4
Keywords
Capillary electrophoresis; Sample stacking; Transient isotachophoresis; Dynamic pH-junction; Sweeping; Extraction
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Funding
- Fundamental Research Funds for the Central Universities [lzujbky-2010-40]
- scientific research ability training of undergraduate students majoring in chemistry by the two patterns based on the tutorial system and top students [J1103307]
- National Science Foundation of China [20875040, 21075056]
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Capillary electrophoresis (CE) has become one of the most useful tools in separation science because of its high separation efficiency, low cost, versatility, ease of sample preparation and automation. However, some limitations of CE, such as poor concentration sensitivity due to its lower sample loading and shorter optical path length, limits its further applications in separation science. In order to solve this problem, various on-line sample preconcentration techniques such as transient isotachophoresis preconcentration, field-enhanced sample stacking, micelle to solvent stacking, micelle collapse, dynamic pH junction, sweeping, solid phase extraction, single drop microextraction and liquid phase microextraction have been combined with CE. Recent developments, applications and some variants together with different combinations of these techniques integrating in CE are reviewed here and our discussions will be confined to the past three years (2008-2011).
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