Publications by authors named "Knut E Rasmussen"

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Parallel electromembrane extraction in the 96-well format.
Lars Erik Eng Eibak, Knut Einar Rasmussen, Elisabeth Leere Oiestad, Stig Pedersen-Bjergaard, Astrid Gjelstad

Anal Chim Acta· May 2014

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Parallel electromembrane extraction in a multiwell plate.
Lars Erik Eng Eibak, Marthe Petrine Parmer, Knut Einar Rasmussen, Stig Pedersen-Bjergaard, Astrid Gjelstad

Anal Bioanal Chem· January 2014

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Parallel artificial liquid membrane extraction: micro-scale liquid-liquid-liquid extraction in the 96-well format.
Astrid Gjelstad, Knut Einar Rasmussen, Marthe Petrine Parmer, Stig Pedersen-Bjergaard

Bioanalysis· June 2013

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Storage of oral fluid as dried spots on alginate and chitosan foam - a new concept for oral fluid collection.
Christine Pernille Lødøen, Lars Erik Eng Eibak, Knut Einar Rasmussen, Stig Pedersen-Bjergaard, Therese Andersen

Bioanalysis· February 2013

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Alginate and chitosan foam combined with electromembrane extraction for dried blood spot analysis.
Lars Erik Eng Eibak, Anne Bee Hegge, Knut Einar Rasmussen, Stig Pedersen-Bjergaard, Astrid Gjelstad

Anal Chem· October 2012

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Kinetic aspects of hollow fiber liquid-phase microextraction and electromembrane extraction.
Astrid Gjelstad, Henrik Jensen, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

Anal Chim Acta· September 2012

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Selective electromembrane extraction at low voltages based on analyte polarity and charge.
Noelia Cabaleiro Domínguez, Astrid Gjelstad, Andrea Molina Nadal, Henrik Jensen, Nickolaj Jacob Petersen, Knut Einar Rasmussen

J Chromatogr A· July 2012

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Electromembrane extraction of stimulating drugs from undiluted whole blood.
Ragnhild Elén Gjulem Jamt, Astrid Gjelstad, Lars Erik Eng Eibak, Elisabeth Leere Øiestad, Asbjørg Solberg Christophersen, Knut Einar Rasmussen

J Chromatogr A· April 2012

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Exhaustive electromembrane extraction of some basic drugs from human plasma followed by liquid chromatography-mass spectrometry.
Lars Erik Eng Eibak, Astrid Gjelstad, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

J Pharm Biomed Anal· January 2012

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Electromembrane extraction from biological fluids.
Nickolaj Jacob Petersen, Knut Einar Rasmussen, Stig Pedersen-Bjergaard, Astrid Gjelstad

Anal Sci· January 2012

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Electromembrane extraction and HPLC analysis of haloacetic acids and aromatic acetic acids in wastewater.
Khalid Alhooshani, Chanbasha Basheer, Jagjit Kaur, Astrid Gjelstad, Knut E Rasmussen

Talanta· October 2011

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Simultaneous extraction of acidic and basic drugs at neutral sample pH: a novel electro-mediated microextraction approach.
Chanbasha Basheer, Jingyi Lee, Stig Pedersen-Bjergaard, Knut Einar Rasmussen, Hian Kee Lee

J Chromatogr A· October 2010

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Kinetic electro membrane extraction under stagnant conditions--fast isolation of drugs from untreated human plasma.
Lars Erik Eng Eibak, Astrid Gjelstad, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

J Chromatogr A· July 2010

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Hollow fiber-liquid-phase microextraction of fungicides from orange juices.
Francisco Barahona, Astrid Gjelstad, Stig Pedersen-Bjergaard, Knut Einar Rasmussen

J Chromatogr A· March 2010

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Implementation of droplet-membrane-droplet liquid-phase microextraction under stagnant conditions for lab-on-a-chip applications.
Tiina Sikanen, Stig Pedersen-Bjergaard, Henrik Jensen, Risto Kostiainen, Knut Einar Rasmussen

Anal Chim Acta· January 2010

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Electromembrane extraction of basic drugs from untreated human plasma and whole blood under physiological pH conditions.
Astrid Gjelstad, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

Anal Bioanal Chem· February 2009

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Drop-to-drop microextraction across a supported liquid membrane by an electrical field under stagnant conditions.
Nickolaj Jacob Petersen, Henrik Jensen, Steen Honoré Hansen, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

J Chromatogr A· February 2009

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Environmental and bioanalytical applications of hollow fiber membrane liquid-phase microextraction: a review.
Jingyi Lee, Hian Kee Lee, Knut E Rasmussen, Stig Pedersen-Bjergaard

Anal Chim Acta· August 2008

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Liquid-phase microextraction with porous hollow fibers, a miniaturized and highly flexible format for liquid-liquid extraction.
Stig Pedersen-Bjergaard, Knut Einar Rasmussen

J Chromatogr A· March 2008

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Parameters affecting electro membrane extraction of basic drugs.
Torunn M Middelthon-Bruer, Astrid Gjelstad, Knut E Rasmussen, Stig Pedersen-Bjergaard

J Sep Sci· March 2008

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Low-voltage electromembrane extraction of basic drugs from biological samples.
Inger Johanne Østegaard Kjelsen, Astrid Gjelstad, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

J Chromatogr A· February 2008

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Simulation of flux during electro-membrane extraction based on the Nernst-Planck equation.
Astrid Gjelstad, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

J Chromatogr A· December 2007

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Microextraction across supported liquid membranes forced by pH gradients and electrical fields.
Astrid Gjelstad, Torill Marita Andersen, Knut Einar Rasmussen, Stig Pedersen-Bjergaard

J Chromatogr A· July 2007

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Supported liquid membranes in hollow fiber liquid-phase microextraction (LPME)--practical considerations in the three-phase mode.
Kari Folde Bårdstu, Tung Si Ho, Knut Einar Rasmussen, Stig Pedersen-Bjergaard, Jan Ake Jönsson

J Sep Sci· June 2007

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25,000-fold pre-concentration in a single step with liquid-phase microextraction.
Tung Si Ho, Terje Vasskog, Trude Anderssen, Einar Jensen, Knut Einar Rasmussen

Anal Chim Acta· May 2007

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