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- W2019405655 abstract "A zwitterionic surfactant, dodecyldimethyl (2-hydroxy-3-sulfopropyl) ammonium (C12H25N+(CH3)2CH2CHOHCH2SO3−), named dodecyl sulfobetaine (DSB), was used as a novel modifier to coat dynamically capillary walls for capillary electrophoresis separation of basic proteins. The DSB coating suppressed the electroosmotic flow (EOF) in the pH range of 3–12. At high DSB concentration, the EOF was suppressed by more than 8.8 times. The DSB coating also prevented successfully the adsorption of cationic proteins on the capillary wall. Anions, such as Cl−, Br−, I−, SO42−, CO32−, and ClO4−, could be used as running buffer modifiers to adjust the EOF for better separation of analytes. Using this dynamically coated capillary, a mixture of eight inorganic anions achieved complete separation within 4.2 min with the efficiencies from 24 000 to 1 310 000 plates/m. In the presence of ClO4− as EOF adjustor, the separation of a mixture containing four basic proteins (lysozyme, cytochrome c, α-chymotrypsinogen A, and myoglobin) yielded efficiencies of 204 000–896 000 plates/m and recoveries of 88%–98%. Migration time reproducibility of these proteins was less than 0.5% relative standard deviation (RSD) from run to run and less than 3.1% RSD from day to day, showing promising application of this novel modifier in protein separation." @default.
- W2019405655 created "2016-06-24" @default.
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- W2019405655 date "2005-02-01" @default.
- W2019405655 modified "2023-10-16" @default.
- W2019405655 title "Application of dodecyldimethyl (2-hydroxy-3-sulfopropyl) ammonium in wall modification for capillary electrophoresis separation of proteins" @default.
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- W2019405655 doi "https://doi.org/10.1002/elps.200410273" @default.
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