Results 191 to 200 of about 274,636 (301)

Flow Rate Determination of the Nanoflow Sheath Liquid CE–MS‐Coupling Applying the nanoCEasy Interface

open access: yesELECTROPHORESIS, EarlyView.
ABSTRACT In recent years, nanoflow sheath liquid (nanoSL) interfaces have been used more commonly for capillary electrophoresis–mass spectrometry (CE–MS) coupling due to their high sensitivity combined with flexibility in CE separation conditions. So far, the exact amount of sheath liquid (SL) and, thus, the dilution effect remain unknown due to the ...
Alisa Höchsmann   +4 more
wiley   +1 more source

Postulations for the Migration Behavior of Amino Acids as Cations in Capillary Zone Electrophoresis

open access: yesELECTROPHORESIS, EarlyView.
ABSTRACT Amino acids (AAs) in their cationic form at pH 2.2 and usual ionic strength show a non‐intuitive migration order in CZE. This is explained by setting up four postulates. The central points in these postulates are the influence of the AA side chain on the pKa${\rm p}K_{\rm a}$ value and the adoption of a defined, preferred conformation to build
Peter Gross   +5 more
wiley   +1 more source

Determination of the Effective Charge Numbers and Ionic Mobilities of Single Isomer and Randomly Highly Sulfated Cyclodextrins by Capillary Isotachophoresis and Zone Electrophoresis

open access: yesELECTROPHORESIS, EarlyView.
ABSTRACT Sulfated cyclodextrins (CDs) are multiply negatively charged molecules widely used as chiral selectors in capillary electrophoresis (CE). In some of their applications, the effective charge numbers of their molecules were observed to be lower than the numbers of the attached sulfated groups due to strong binding of counterions. However, degree
Veronika Šolínová   +2 more
wiley   +1 more source

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