Research output: Contribution to journal › Article › peer-review
Ionic liquids based on imidazole for online concentration of catecholamines in capillary electrophoresis. / Bessonova, Elena; Kartsova, Liudmila; Gallyamova, Valeria.
In: Journal of Separation Science, Vol. 40, No. 10, 05.2017, p. 2304-2311.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Ionic liquids based on imidazole for online concentration of catecholamines in capillary electrophoresis
AU - Bessonova, Elena
AU - Kartsova, Liudmila
AU - Gallyamova, Valeria
N1 - Funding Information: The authors are thankful to the Russian Federation for Basic Research for financial support (grant no. 16-03-00791-?). We are also grateful to the Chemistry Educational Centre of Research Park, Saint Petersburg State University, for technical support. Publisher Copyright: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2017/5
Y1 - 2017/5
N2 - Potential possibilities of long-chain ionic liquids based on imidazole (1-dodecyl-3-methylimidazolium chloride and 1-cetyl-3-methylimidazolium chloride) for online sample concentration techniques (field-amplified sample stacking, head-column field-amplified sample stacking, and sweeping) of catecholamines were studied in both capillary zone electrophoresis and micellar electrokinetic chromatography. The use of a high-conductivity sample matrix in sweeping was found to significantly increase the separation efficiency of analyte up to 2 × 106 theoretical plates per meter and remarkably reduce limits of detection for catecholamines up to 50 ng/mL. This approach was shown to be suitable for the determination of trace amounts of catecholamines in biological fluids.
AB - Potential possibilities of long-chain ionic liquids based on imidazole (1-dodecyl-3-methylimidazolium chloride and 1-cetyl-3-methylimidazolium chloride) for online sample concentration techniques (field-amplified sample stacking, head-column field-amplified sample stacking, and sweeping) of catecholamines were studied in both capillary zone electrophoresis and micellar electrokinetic chromatography. The use of a high-conductivity sample matrix in sweeping was found to significantly increase the separation efficiency of analyte up to 2 × 106 theoretical plates per meter and remarkably reduce limits of detection for catecholamines up to 50 ng/mL. This approach was shown to be suitable for the determination of trace amounts of catecholamines in biological fluids.
KW - capillary electrophoresis
KW - catecholamines
KW - ionic liquids
KW - online concentration
UR - http://www.scopus.com/inward/record.url?scp=85018911030&partnerID=8YFLogxK
U2 - 10.1002/jssc.201601394
DO - 10.1002/jssc.201601394
M3 - Article
C2 - 28371456
AN - SCOPUS:85018911030
VL - 40
SP - 2304
EP - 2311
JO - Journal of Separation Science
JF - Journal of Separation Science
SN - 1615-9306
IS - 10
ER -
ID: 9453321