The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, a micellar electrokinetic chromatography (MEKC) method combined with cation-selective exhaustive injection (CSEI) and sweeping was developed to separate and concentrate four tobacco-specific N-nitrosamines (TSNAs) including N′-nitrosoanabasine (NAB), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) and 4-(methylnitrosamino)-4-(3-pyridyl)-1-butanol...
A micellar electrokinetic chromatography method was developed for the simultaneous determination of three fat-soluble vitamins with UV detection. Several factors, such as the composition, concentration and pH of the background solution, different additives in the background solution, were optimized. Three on-line concentration methods, namely, sweeping, field-enhanced sample injection and pressure-assisted...
A simple, reproducible and sensitive micellar electrokinetic chromatography (MEKC) method was developed for the separation and determination of 10 saponins from Panax notoginseng. Field-enhanced sample injection with reverse migrating micelles (FESI–RMM) was used for on-line concentration of the saponins. The effects of concentrations of sodium dodecyl sulfate (SDS) and organic modifier, the sample...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.