scholarly journals Determination of imazalil by on-line coupled capillary isotachophoresis with capillary zone electrophoresis

2003 ◽  
Vol 1 (1) ◽  
pp. 91-97 ◽  
Author(s):  
František Kvasnička ◽  
Jaroslav Dobiáš ◽  
Kamila Klaudisová-Chudáčková
Keyword(s):  
Detection Limit ◽  
Capillary Zone Electrophoresis ◽  
Food Packaging ◽  
Capillary Isotachophoresis ◽  
Good Separation ◽  
Zone Electrophoresis ◽  
On Line ◽  
Capillary Zone ◽  
Running Cost

AbstractA simple, rapid and reproducible capillary isotachophoretic on-line coupled with capillary zone electrophoresis (CITP-CZE) method for the determination of IMz in food packaging extracts and its residues in apples is described. A good separation of the IMZ from other sample constituents was achieved within 15 minutes without any sample clean up. Method characteristics (linearity, accuracy, intra-assay and detection limit) were determined. Less amount of time involved, sufficient sensitivity and low running cost are the important attributes of CITP-CZE method.

scholarly journals Determination of aristolochic acid by capillary zone electrophoresis

2004 ◽  
Vol 2 (3) ◽  
pp. 417-424 ◽  
Author(s):  
František Kvasnička ◽  
Rudolf Ševčík ◽  
Michal Voldřich ◽  
Jana Krátká
Keyword(s):  
Detection Limit ◽  
Capillary Zone Electrophoresis ◽  
Aristolochic Acid ◽  
Background Electrolyte ◽  
Ease Of Use ◽  
Clear Separation ◽  
Zone Electrophoresis ◽  
Capillary Zone ◽  
Running Cost

AbstractA simple and rapid capillary zone electrophoresis (CZE) method for the determination of aristolochic acid (AA) in dietary supplements and selected herbs is described. A clear separation of AA from other sample constituents was achieved within 5 minutes without any sample clean up. A mixture of 20 mM-morpholinethanesulphonic acid+10 mM-BisTrisPropane+0.2% hydroxyethylcelullose in 10% methanol serves as a background electrolyte. The linearity, accuracy, intra-assay and detection limit of the developed method are 200–6000 ng/mL, 95–103%, 3.5%, and 50 ng/ml, respectively. Ease of use, sufficient sensitivity and low running cost are the most important attributes of the CZE method. The proposed CZE method was compared with HPLC.

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