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- W2119726514 abstract "Abstract Enantiomeric separation and detection of 1,1′‐binaphthyl‐2,2′‐diamine (BNA) has been successfully optimized by MEKC‐ESI‐MS using a polymeric surfactant polysodium N ‐undecenoxycarbonyl‐L‐leucinate (poly‐L‐SUCL) as a pseudostationary phase. In the first step, MEKC conditions were optimized by a five‐factor three‐level central composite design (CCD) of experiment. All five MEKC factors (buffer pH, percentage of ACN in the running buffer, concentration of surfactant, concentration of ammonium acetate (NH 4 OAc), and voltage) were found significant to the responses (measured as the chiral resolution and analysis time). The interactions between MEKC factors were further evaluated using a quadratic model equation which allowed the generation of 3‐D response surface image to reach the optimum conditions. To obtain the best S/N, sheath liquid composition and spray chamber parameters were successfully optimized using the same strategy. Baseline enantiomeric resolution in less than 20 min and optimum MS signal of BNA enantiomers (S/N = 45 at 0.4 mg/mL) were ultimately achieved at the optimized conditions. The adequacy of the model was validated by experimental runs at the optimal predicted conditions. The predicted results were found to be in good agreement with the experimental data." @default.
- W2119726514 created "2016-06-24" @default.
- W2119726514 creator A5017118967 @default.
- W2119726514 creator A5036931435 @default.
- W2119726514 date "2009-05-28" @default.
- W2119726514 modified "2023-10-10" @default.
- W2119726514 title "Multivariate approach for the enantioselective analysis in MEKC-MS: II. Optimization of 1,1′-binaphthyl-2,2′-diamine in positive ion mode" @default.
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- W2119726514 doi "https://doi.org/10.1002/jssc.200800711" @default.
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