Sökning: "mixed-mode kolonn"

Hittade 2 uppsatser innehållade orden mixed-mode kolonn.

1. 1. Investigation of Adsorption and Retention of Charged Compounds In RPLC

   Kandidat-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

   Författare :Emma Fryxelius; [2022]
   Nyckelord :adsorption; adsorption isotherm; charged compounds; promethazine hydrochloride; propranolol hydrochloride; mixed-mode; retention; RPLC;

   Sammanfattning : The adsorption isotherm of two weak bases, Promethazine hydrochloride and Propranolol hydrochloride, were determined with isocratic reversed-phase liquid chromatography, with a 60 w% methanol in 20 mM sodium acetate buffer pH 4 as the mobile phase, and calculated by the elution by characteristic points method. The data obtained from the method were then fitted into the Langmuir isotherm and the electrostatically modified Langmuir. LÄS MER

3. 2. Utveckling av HPLC-metoder för kvantifiering av nyckelkomponenter i en villkorad emulsion

   Kandidat-uppsats, Institutionen för fysik, kemi och biologi

   Författare :Mikael Persson; [2009]
   Nyckelord :ELSD; HPLC; mixed-mode kolonn; polyglykol; dikarboxylsyra;

   Sammanfattning : Traditionally, rolling mills use emulsions based on a mixture of oil and water for lubrication. Since two years ago SAPA has been using (instead of oil) a synthetic lubricant so called conditional emulsion for hot-rolling of aluminum. LÄS MER