Analytical microextraction with supported liquid membranes
Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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Analytical microextraction with supported liquid membranes. / Pedersen-Bjergaard, Stig.
Analytical Sample Preparation With Nano- and Other High-Performance Materials. Elsevier, 2021. p. 97-109.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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TY - CHAP
T1 - Analytical microextraction with supported liquid membranes
AU - Pedersen-Bjergaard, Stig
N1 - Publisher Copyright: © 2021 Elsevier Inc. All rights reserved.
PY - 2021
Y1 - 2021
N2 - This chapter focuses on microextraction using supported liquid membranes (SLMs) and discusses two- and three-phase hollow-fiber liquid-phase microextraction, solvent bar microextraction, 96-well liquid-phase microextraction (parallel artificial liquid membrane extraction), and electromembrane extraction. These techniques all rely on mass transfer across an SLM, which is a microliter volume of organic solvent held by capillary forces in the pores of porous polymeric membrane. The organic solvent is immiscible with water, such as 1-octanol. The polymeric membrane is either a hollow-fiber membrane or a flat membrane and is hydrophobic such as polypropylene or polyvinylidene fluoride. Extraction can be in two-phase systems, from aqueous sample, across organic SLM and into organic acceptor; or in three-phase systems from aqueous sample, across organic SLM and into aqueous acceptor. The volume of acceptor is typically 2-50µL and preconcentration is feasible. Extraction can be by passive diffusion or by migration in an electrical field sustained across the SLM. In the following, we discuss the different principles, along with practical examples and method development.
AB - This chapter focuses on microextraction using supported liquid membranes (SLMs) and discusses two- and three-phase hollow-fiber liquid-phase microextraction, solvent bar microextraction, 96-well liquid-phase microextraction (parallel artificial liquid membrane extraction), and electromembrane extraction. These techniques all rely on mass transfer across an SLM, which is a microliter volume of organic solvent held by capillary forces in the pores of porous polymeric membrane. The organic solvent is immiscible with water, such as 1-octanol. The polymeric membrane is either a hollow-fiber membrane or a flat membrane and is hydrophobic such as polypropylene or polyvinylidene fluoride. Extraction can be in two-phase systems, from aqueous sample, across organic SLM and into organic acceptor; or in three-phase systems from aqueous sample, across organic SLM and into aqueous acceptor. The volume of acceptor is typically 2-50µL and preconcentration is feasible. Extraction can be by passive diffusion or by migration in an electrical field sustained across the SLM. In the following, we discuss the different principles, along with practical examples and method development.
KW - 96-well liquid-phase extraction
KW - electromembrane extraction
KW - hollow-fiber liquid-phase microextraction
KW - microextraction
KW - Sample preparation
KW - solvent bar microextraction
U2 - 10.1016/B978-0-12-822139-6.00013-4
DO - 10.1016/B978-0-12-822139-6.00013-4
M3 - Book chapter
AN - SCOPUS:85137895139
SN - 9780128221723
SP - 97
EP - 109
BT - Analytical Sample Preparation With Nano- and Other High-Performance Materials
PB - Elsevier
ER -
ID: 326465988