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Updated: Apr 29, 2026

Introduction to Solid Supported Membrane Based Electrophysiology

Introduction to Solid Supported Membrane Based Electrophysiology

Published on: May 11, 2013

Parallel electromembrane extraction in the 96-well format.

Lars Erik Eng Eibak¹, Knut Einar Rasmussen¹, Elisabeth Leere Oiestad²

¹School of Pharmacy, University of Oslo, PO Box 1068, Blindern, Oslo 0316, Norway.

Analytica Chimica Acta

|May 22, 2014

Summary

This summary is machine-generated.

Parallel electromembrane extraction (Pa-EME) shows high repeatability and extraction recoveries across various biological matrices. This method enhances sample throughput for bioanalytical applications, proving effective even with matrix variations and high sample numbers.

Keywords:

96-Well format Biological matrices Electromembrane extraction High throughput sample preparation Supported liquid membranes Ultra performance liquid chromatography

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Area of Science:

Analytical Chemistry
Separation Science
Bioanalytical Chemistry

Background:

Electromembrane extraction (EME) is a sample preparation technique.
High-throughput sample preparation is crucial in bioanalysis.
Existing methods may face challenges with complex matrices and throughput.

Purpose of the Study:

To investigate the repeatability and extraction recoveries of parallel electromembrane extraction (Pa-EME).
To assess the performance of Pa-EME with different sample matrices (water, plasma, urine).
To demonstrate the high-throughput capabilities of Pa-EME for bioanalytical applications.

Main Methods:

Parallel electromembrane extraction (Pa-EME) was used to isolate amitriptyline, fluoxetine, and haloperidol.
Samples included pure water, undiluted human plasma, and undiluted human urine.
Extraction recoveries and repeatability were assessed under various conditions, including perforated wells and high sample throughput (up to 96 samples).

Main Results:

Repeatability was independent of sample matrices (water, plasma, urine).
Intact circuits in Pa-EME remained unaffected despite perforation in other circuits.
Exhaustive extraction was achieved for target analytes from water and plasma (except fluoxetine at 81% recovery).
Sample throughput was significantly increased without compromising extraction recoveries or repeatability.

Conclusions:

Pa-EME is a robust and repeatable technique for sample preparation in bioanalysis.
The method demonstrates high sample throughput capabilities, suitable for processing large numbers of samples.
Pa-EME, when coupled with UPLC, offers a powerful platform for high-throughput bioanalytical challenges.