Extraction across supported liquid membranes by use of electrical fields

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

The method of electrokinetic migration that used electrical fields to extract supported liquid membranes (SLM) was demonstrated. Several hydrophobic basic drug substances were extracted protonated molecules from a 300 μL acidic sample solution through a SLM, consisting 15 μL 2-nitropheynl octyl ether (NPOE) into 30 μL 10 mmol L-1hydrochloric acid (HCL) as the acceptor solution, applying 300 V dc. The electrical potential difference was the force driving extraction of the charged analytes, without any pH gradient across the SLM. The use of electrical potential difference was found to be a significant driving force for SLM extraction a pH gradient. The kinetic advantage of using electrical field was found also found to be significant, when extractions were performed from small sample volumes.

OriginalsprogEngelsk
TidsskriftAnalytical and Bioanalytical Chemistry
Vol/bind388
Udgave nummer3
Sider (fra-til)521-523
Antal sider3
ISSN1618-2642
DOI
StatusUdgivet - 1 jun. 2007

ID: 231651215