Liquid-liquid-extractions with a separating funnel are often used to transfer analytes from the aqueous to the organic phase, or to clean-up complex matrices before analysis. Especially, if this has to be done regularly, the disadvantages of the classical liquid-liquid-extraction, such as low recovery rates, formation of emulsions, poor phase separation, and high solvent consumption, become evident. MACHEREY-NAGEL offers CHROMABOND® XTR, a highly pure, coarse-grained kieselguhr material, which considerably improves liquid-liquid-extractions. Aqueous solutions are simply applied to the column. After the liquid is completely soaked up, analytes can be eluted with organic solvents, which are not miscible with water. Because the aqueous solution spreads over the surface of the kieselguhr as a...Read more
Receive your quote directly from MACHEREY-NAGEL GmbH & Co. KG.