Stig Pedersen-Bjergaard

Image of Stig Pedersen-Bjergaard
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Phone +47-22856576
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Visiting address Sem Sælands vei 3 Farmasibygningen 0371 OSLO
Postal address Postboks 1068 Blindern 0316 OSLO
Other affiliations School of Pharmacy

Academic Interests

Main focus is directed towards the developemnt of new and improved microextraction concepts and techniques for rapid and selective isolation of drug substances and peptides from small volumes of biological fluids. The microextraction techniques are based on artificial liquid membranes, and mass transfer is based primarily on passive diffusion and on electrokinetic migration. The objective is to use the microextraction techniques for drug analysis and biochemical analysis in the future for rapid sampling and sample preparation i microscale laboratory systems, in single cells, and in living organisms.

Teaching

Involved in 3 different courses in drug analysis, teaching chemical testing of drug substances and finished pharmaceutical products, and analysis of drugs in biological fluids. Also involved in one course in general chemistry.

Author of an upcoming book titled "Introduction to Pharmaceutical Chemical Analysis" to be published by Wiley.

Higher education and employment history

Professor (part time) at Faculty of Pharmaceutical Sciences, University of Copenhagen (Denmark)
PhD in Analytical Chemistry, University of Oslo (1995)
MSc in Chemistry, Technical University of Denmark (1990)

Honoraria

Journal of Chromatography Top Cited Article Award 2000-2004
Journal of Chromatography Top Cited Article Award 2007-2009

Appointments

Editor of International Journal of Analytical Chemistry
Editorial Board of Journal of Chromatography
Editorial Board of Analytica Chimica Acta

Collaboration

  • University of Copenhagen (Denmark)
  • University of Lund (Sweden)
  • University of Helsinki (Finland)
  • University of Singapore (Singapore)
  • University of Waterloo (Canada)
  • University of Zaragoza (Spain)
  • University of Madrid (Spain)
     

Publications

  • Fernández, Elena; Vårdal, Linda; Vidal, Lorena; Canals, Antonio; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2017). DUBLETT: Complexation-mediated electromembrane extraction of highly polar basic drugs – a fundamental study with catecholamines in urine as model system. Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  409, s 4215- 4223 . doi: 10.1007/s00216-017-0370-2
  • Gjelstad, Astrid; Andresen, Alf Terje; Dahlgren, Anders; Gundersen, Thomas Erik & Pedersen-Bjergaard, Stig (2017). High-throughput liquid-liquid extraction in 96-well format: Parallel artificial liquid membrane extraction. LC GC Europe.  ISSN 1471-6577.  30(1), s 10- 17
  • Gjelstad, Astrid; Andresen, Alf Terje; Dahlgren, Anders; Gundersen, Thomas Erik & Pedersen-Bjergaard, Stig (2017). High-throughput liquid-liquid extraction in 96-well format: Parallel artificial liquid membrane extraction. LC GC North America.  ISSN 1527-5949.  35(3), s 192- 196
  • Huang, Chuixiu; Chen, Zhiliang; Gjelstad, Astrid; Pedersen-Bjergaard, Stig & Shen, Xiantao (2017). Electromembrane extraction. TrAC. Trends in analytical chemistry.  ISSN 0165-9936.  95, s 47- 56
  • Huang, Chuixiu; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2017). Electromembrane extraction with alkylated phosphites and phosphates as supported liquid membranes. Journal of Membrane Science.  ISSN 0376-7388.  526, s 18- 24
  • Khajeh, Mostafa; Pedersen-Bjergaard, Stig; Bohlooli, Mousa; Barkhordar, Afsaneh & Ghaffari-Moghaddam, Mansour (2017). Maghemite nanoparticle-decorated hollow fiber electromembrane extraction combined with dispersive liquid-liquid microextraction for the determination of thymol from Carum copticum. Journal of the Science of Food and Agriculture.  ISSN 0022-5142.  97(5), s 1517- 1523 . doi: 10.1002/jsfa.7894
  • Kige Rye, Torstein; Fuchs, David; Pedersen-Bjergaard, Stig & Petersen, Nickolaj Jacob (2017). Direct coupling of electromembrane extraction to mass spectrometry – Advancing the probe functionality toward measurements of zwitterionic drug metabolites. Analytica Chimica Acta.  ISSN 0003-2670.  983, s 121- 129
  • Pedersen-Bjergaard, Stig; Huang, Chuixiu & Gjelstad, Astrid (2017). Electromembrane extraction – Recent trends and where to go. Journal of Pharmaceutical Analysis.  ISSN 2095-1779.  7, s 141- 147
  • Pilarova, Veronika; Sultani, Mumtaz; Ask, Kristine Skoglund; Novakova, Lucie; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2017). One-step extraction of polar drugs from plasma by parallel artificial liquid membrane extraction. Journal of chromatography. B.  ISSN 1570-0232.  1043, s 25- 32
  • Restan, Magnus Saed; Jensen, Henrik; Shen, Xiantao; Huang, Chuixiu; Martinsen, Ørjan Grøttem; Kuban, Pavel; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2017). Comprehensive study of buffer systems and local pH effects in electromembrane extraction. Analytica Chimica Acta.  ISSN 0003-2670.  984, s 116- 123
  • Vårdal, Linda; Askildsen, Hilde-Merete; Gjelstad, Astrid; Øiestad, Elisabeth Leere; Edvardsen, Hilde Marie Erøy & Pedersen-Bjergaard, Stig (2017). Parallel artificial liquid membrane extraction of new psychoactive substances in plasma and whole blood. Journal of Chromatography B: Biomedical Sciences and Applications.  ISSN 1387-2273.  1048, s 77- 84 . doi: 10.1016/j.jchromb.2017.02.010
  • Vårdal, Linda; Gjelstad, Astrid; Huang, Chuixiu; Øiestad, Elisabeth Leere & Pedersen-Bjergaard, Stig (2017). Efficient discrimination and removal of phospholipids during electromembrane extraction from human plasma samples. Bioanalysis.  ISSN 1757-6180.  9(8), s 631- 641 . doi: 10.4155/bio-2017-0027
  • Ask, Kristine Skoglund; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2016). Dried blood spots on carboxymethyl cellulose sheets: Rapid sample preparation based on dissolution and precipitation. Chromatographia.  ISSN 0009-5893.  79, s 509- 514 . doi: 10.1007/s10337-016-3039-7
  • Ask, Kristine Skoglund; Turgay, Bardakci; Parmer, Marthe Petrine; Halvorsen, Trine Grønhaug; Øiestad, Elisabeth Leere; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2016). Parallel artificial liquid membrane extraction as an efficient tool for removal of phospholipids from human plasma. Journal of Pharmaceutical and Biomedical Analysis.  ISSN 0731-7085.  129, s 229- 236 . doi: 10.1016/j.jpba.2016.07.011
  • Fuchs, David; Gabel-Jensen, Charlotte; Jensen, Henrik; Rand, Kasper D.; Pedersen-Bjergaard, Stig; Honoré Hansen, Steen & Petersen, Nickolaj Jacob (2016). Direct coupling of a flow-flow electromembrane extraction probe to LC-MS. Analytica Chimica Acta.  ISSN 0003-2670.  905, s 93- 99 . doi: 10.1016/j.aca.2015.12.014
  • Fuchs, David; Pedersen-Bjergaard, Stig; Jensen, Henrik; Rand, Kasper D.; Honoré Hansen, Steen & Petersen, Nickolaj Jacob (2016). Fully automated electro membrane extraction autosampler for LC-MS systems allowing soft extractions for high-throughput applications. Analytical Chemistry.  ISSN 0003-2700.  88(13), s 6797- 6804 . doi: 10.1021/acs.analchem.6b01243
  • Huang, Chuixiu; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2016). Organic solvents in electromembrane extraction: recent insights. Analitical chemistry (Tel Aviv, 1993).  ISSN 0793-0135.  35(4), s 169- 183 . doi: 10.1515/revac-2016-0008
  • Huang, Chuixiu; Jensen, Henrik; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2016). Mass transfer in electromembrane extraction - The link between theory and experiments. Journal of Separation Science.  ISSN 1615-9314.  39(1), s 188- 197 . doi: 10.1002/jssc.201500905
  • Huang, Chuixiu; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2016). Electromembrane extraction of polar basic drugs from plasma with pure bis(2-ethylhexyl) phosphite as supported liquid membrane. Analytica Chimica Acta.  ISSN 0003-2670.  934, s 80- 87 . doi: 10.1016/j.aca.2016.06.002
  • Kuban, Pavel; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2016). Micro-electromembrane extraction using multiple free liquid membranes and acceptor solutions – Towards selective extractions of analytes based on their acid-base strength. Analytica Chimica Acta.  ISSN 0003-2670.  943, s 64- 73 . doi: 10.1016/j.aca.2016.09.022
  • Poole, Colin; Mester, Zoltan; Miro, Manuel; Pedersen-Bjergaard, Stig & Pawliszyn, Janusz (2016). Extraction for analytical scale sample preparation (IUPAC Technical Report). Pure and Applied Chemistry.  ISSN 0033-4545.  88(7), s 649- 687 . doi: 10.1515/pac-2015-0705
  • Poole, Colin; Mester, Zoltan; Miro, Manuel; Pedersen-Bjergaard, Stig & Pawliszyn, Janusz (2016). Glossary of terms used in extraction (IUPAC Recommendations 2016). Pure and Applied Chemistry.  ISSN 0033-4545.  88(5), s 517- 558 . doi: 10.1515/pac-2015-0903
  • Fuchs, David; Jensen, Henrik; Pedersen-Bjergaard, Stig; Gabel-Jensen, Charlotte; Honoré Hansen, Steen & Petersen, Nickolaj Jacob (2015). Real time extraction kinetics of electro membrane extraction verified by comparing drug metabolism profiles obtained from a flow-flow electro membrane extraction-mass spectrometry system with LC-MS. Analytical Chemistry.  ISSN 0003-2700.  87, s 5775- 5781
  • Gjelstad, Astrid; Pedersen-Bjergaard, Stig & Seip, Knut Fredrik (2015). Electromembrane extraction as a rapid and selective miniaturized sample preparation technique for biological fluids. Bioanalysis.  ISSN 1757-6180.  7(17), s 2203- 2209 . doi: 10.4155/bio.15.150
  • Huang, Chuixiu; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2015). Exhaustive extraction of peptides by electromembrane extraction. Analytica Chimica Acta.  ISSN 0003-2670.  853(1), s 328- 334 . doi: 10.1016/j.aca.2014.10.017
  • Huang, Chuixiu; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2015). Selective electromembrane extraction based on isoelectric point: Fundamental studies with angiotensin II antipeptide as model analyte. Journal of Membrane Science.  ISSN 0376-7388.  481, s 115- 123 . doi: 10.1016/j.memsci.2015.02.006
  • Huang, Chuixiu; Gjelstad, Astrid; Seip, Knut Fredrik; Jensen, Henrik & Pedersen-Bjergaard, Stig (2015). Exhaustive and stable electromembrane extraction of acidic drugs from human plasma. Journal of Chromatography A.  ISSN 0021-9673.  1425, s 81- 87 . doi: 10.1016/j.chroma.2015.11.052
  • Huang, Chuixiu; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2015). Electromembrane extraction for pharmaceutical and biomedical analysis - Quo vadis. Journal of Pharmaceutical and Biomedical Analysis.  ISSN 0731-7085.  113, s 97- 107 . doi: 10.1016/j.jpba.2015.01.038
  • Huang, Chuixiu; Seip, Knut Fredrik; Gjelstad, Astrid; Shen, Xiantao & Pedersen-Bjergaard, Stig (2015). Combination of Electromembrane Extraction and Liquid-Phase Microextraction in a Single Step: Simultaneous Group Separation of Acidic and Basic Drugs. Analytical Chemistry.  ISSN 0003-2700.  87(13), s 6951- 6957 . doi: 10.1021/acs.analchem.5b01610
  • Khajeh, Mostafa; Pedersen-Bjergaard, Stig; Barkhordar, Afsaneh & Bohlooli, Mousa (2015). Application of hollow cylindrical wheat stem for electromembrane extraction of thorium in water samples. Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy.  ISSN 1386-1425.  137, s 328- 332 . doi: 10.1016/j.saa.2014.08.103
  • Pedersen-Bjergaard, Stig (2015). Analysis of small-molecule drugs in biological fluids, In Steen Honoré Hansen & Stig Pedersen-Bjergaard (ed.),  Bioanalysis of pharmaceuticals : sample preparation, separation techniques and mass spectrometry.  Wiley-Blackwell.  ISBN 978-111871682-3.  s 207 - 259
  • Pedersen-Bjergaard, Stig; Gjelstad, Astrid & Halvorsen, Trine Grønhaug (2015). Sample preparation, In Steen Honoré Hansen & Stig Pedersen-Bjergaard (ed.),  Bioanalysis of pharmaceuticals : sample preparation, separation techniques and mass spectrometry.  Wiley-Blackwell.  ISBN 978-111871682-3.  s 73 - 121
  • Petersen, Nickolaj Jacob; Jensen, Henrik & Pedersen-Bjergaard, Stig (2015). On-chip electromembrane extraction for monitoring drug metabolism in real time by electrospray ionization mass spectrometry. Methods in Molecular Biology.  ISSN 1064-3745.  1274, s 171- 182 . doi: 10.1007/978-1-4939-2353-3_15
  • Roldán-Pijuán, Mercedes; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2015). Parallel artificial liquid membrane extraction of acidic drugs from human plasma. Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  407(10), s 2811- 2819 . doi: 10.1007/s00216-015-8505-9
  • Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2015). The potential of electromembrane extraction for bioanalytical applications. Bioanalysis.  ISSN 1757-6180.  7(4), s 463- 480 . doi: 10.4155/bio.14.303
  • Dugstad, Helene bonkerud; Petersen, Nickolaj Jacob; Jensen, Henrik; Gabel-Jensen, Charlotte; Honoré Hansen, Steen & Pedersen-Bjergaard, Stig (2014). Development and characterization of a small electromembrane extraction probe coupled with mass spectrometry for real-time and online monitoring of in vitro drug metabolism. Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  406(2), s 421- 429 . doi: 10.1007/s00216-013-7378-z
  • Eibak, Lars Erik; Parmer, Marthe Petrine; Rasmussen, Knut Einar; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2014). Parallel electromembrane extraction in a multiwell plate. Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  406(2), s 431- 440 . doi: 10.1007/s00216-013-7345-8
  • Eibak, Lars Erik; Rasmussen, Knut Einar; Øiestad, Elisabeth Leere; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2014). Parallel electromembrane extraction in the 96-well format. Analytica Chimica Acta.  ISSN 0003-2670.  828, s 46- 52 . doi: 10.1016/j.aca.2014.04.038
  • Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Electromembrane extraction - Three-phase electrophoresis for future preparative applications. Electrophoresis.  ISSN 0173-0835.  35(17), s 2421- 2428 . doi: 10.1002/elps.201400127
  • Huang, Chuixiu; Eibak, Lars Erik; Gjelstad, Astrid; Shen, Xiantao; Trones, Roger; Jensen, Henrik & Pedersen-Bjergaard, Stig (2014). Development of a flat membrane based device for electromembrane extraction: A new approach for exhaustive extraction of basic drugs from human plasma. Journal of Chromatography A.  ISSN 0021-9673.  1326, s 7- 12 . doi: 10.1016/j.chroma.2013.12.028
  • Li, Bin; Petersen, Nickolaj Jacob; Ramos Payan, Maria D.; Honoré Hansen, Steen & Pedersen-Bjergaard, Stig (2014). Design and implementation of an automated liquid-phase microextraction-chip system coupled on-line with high performance liquid chromatography. Talanta: The International Journal of Pure and Applied Analytical Chemistry.  ISSN 0039-9140.  120, s 224- 229 . doi: 10.1016/j.talanta.2013.12.016
  • Parmer, Marthe Petrine; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Parallel Artificial Liquid Membrane Extraction (PALME): A new tool for sample preparation. GIT Laboratory Journal Europe.  ISSN 1611-6038.  18(11-12), s 18- 19
  • Seip, Knut Fredrik; Faizi, Moheba; Vergel, Cristina; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Stability and efficiency of supported liquid membranes in electromembrane extraction-a link to solvent properties. Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  406(8), s 2151- 2161 . doi: 10.1007/s00216-013-7418-8
  • Seip, Knut Fredrik; Jensen, Henrik; Kieu, Elisabeth Thanh; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Salt effects in electromembrane extraction. Journal of Chromatography A.  ISSN 0021-9673.  1347, s 1- 7 . doi: 10.1016/j.chroma.2014.04.053
  • Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2013). Perspective: Hollow fibre liquid-phase microextraction - principles, performance, applicability, and future directions. Scientia Chromatographica.  ISSN 1984-4433.  5, s 1- 10
  • Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2013). Recent Developments in Electromembrane Extraction. Analytical Methods.  ISSN 1759-9660.  5(18), s 4549- 4557 . doi: 10.1039/c3ay40547h
  • Gjelstad, Astrid; Rasmussen, Knut Einar; Parmer, Marthe Petrine & Pedersen-Bjergaard, Stig (2013). Parallel artificial liquid membrane extraction: micro-scale liquid–liquid–liquid extraction in the 96-well format. Bioanalysis.  ISSN 1757-6180.  5(11), s 1377- 1385 . doi: 10.4155/bio.13.59
  • Lødøen, Christine Pernille; Eibak, Lars Erik; Rasmussen, Knut Einar; Pedersen-Bjergaard, Stig; Andersen, Therese & Gjelstad, Astrid (2013). Storage of Oral Fluid as Dried Spots on Alginate and Chitosan foam – A New Concept for Oral Fluid Collection. Bioanalysis.  ISSN 1757-6180.  5(3), s 317- 325 . doi: 10.4155/BIO.12.315
  • Ramos Payan, Maria D.; Li, Bin; Petersen, Nickolaj Jacob; Jensen, Henrik; Honoré Hansen, Steen & Pedersen-Bjergaard, Stig (2013). Nano-electromembrane extraction. Analytica Chimica Acta.  ISSN 0003-2670.  785, s 60- 66 . doi: 10.1016/j.aca.2013.04.055
  • Rosting, Cecilie; Pedersen-Bjergaard, Stig; Honoré Hansen, Steen & Janfelt, Christian (2013). High-throughput analysis of drugs in biological fluids by desorption electrospray ionization mass spectrometry coupled with thin liquid membrane extraction. The Analyst.  ISSN 0003-2654.  138(20), s 5965- 5972 . doi: 10.1039/c3an00544e
  • Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2013). Electromembrane extraction from aqueous samples containing polar organic solvents. Journal of Chromatography A.  ISSN 0021-9673.  1308, s 37- 44 . doi: 10.1016/j.chroma.2013.07.105
  • Seip, Knut Fredrik; Jensen, Henrik; Hovde, Marit; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2013). Electromembrane extraction: Distribution or electrophoresis?. Electrophoresis.  ISSN 0173-0835.  34(5), s 792- 799 . doi: 10.1002/elps.201200587
  • Balchen, Marte; Lund, Hanne; Reubsaet, Leon & Pedersen-Bjergaard, Stig (2012). Fast, selective, and sensitive analysis of low-abundance peptides in human plasma by electromembrane extraction. Analytica Chimica Acta.  ISSN 0003-2670.  716, s 16- 23 . doi: 10.1016/j.aca.2011.02.058
  • Domínguez, Noelia Cabaleiro; Gjelstad, Astrid; Nadal, Andrea Molina; Jensen, Henrik; Petersen, Nickolaj Jacob; Hansen, Steen Honore; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Selective electromembrane extraction at low voltages based on analyte polarity and charge. Journal of Chromatography A.  ISSN 0021-9673.  1248, s 48- 54 . doi: 10.1016/j.chroma.2012.05.092
  • Eibak, Lars Erik; Gjelstad, Astrid; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Exhaustive electromembrane extraction of some basic drugs from human plasma followed by liquid chromatography-mass spectrometry. Journal of Pharmaceutical and Biomedical Analysis.  ISSN 0731-7085.  57, s 33- 38 . doi: 10.1016/j.jpba.2011.08.026
  • Eibak, Lars Erik; Hegge, Anne Bee; Rasmussen, Knut Einar; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2012). Alginate and Chitosan Foam Combined with Electromembrane Extraction for Dried Blood Spot Analysis. Analytical Chemistry.  ISSN 0003-2700.  84(20), s 8783- 8789 . doi: 10.1021/ac301996n
  • Gjelstad, Astrid; Jensen, Henrik; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Kinetic aspects of hollow fiber liquid-phase microextraction and electromembrane extraction. Analytica Chimica Acta.  ISSN 0003-2670.  742, s 10- 16 . doi: 10.1016/j.aca.2011.12.039
  • Gjelstad, Astrid; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Hollow Fiber Liquid-Phase Microextraction, In Janusz Pawliszyn & Heather L. Lord (ed.),  Comprehensive Sampling and Sample Preparation.  Elsevier.  ISBN 9780123813732.  2.23.  s 475 - 496
  • Jamt, Ragnnild Elen Gjulem; Gjelstad, Astrid; Eibak, Lars Erik; Øiestad, Elisabeth Leere; Christophersen, Asbjørg S.; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Electromembrane extraction of stimulating drugs from undiluted whole blood. Journal of Chromatography A.  ISSN 0021-9673.  1232, s 27- 36 . doi: 10.1016/j.chroma.2011.08.058

View all works in Cristin

  • Hansen, Steen Honoré & Pedersen-Bjergaard, Stig (ed.) (2015). Bioanalysis of pharmaceuticals : sample preparation, separation techniques and mass spectrometry. Wiley-Blackwell.  ISBN 978-111871682-3.  318 s.

View all works in Cristin

  • Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2017). Liquid-phase microextraction (LPME) – From conceptual development and into routine laboratories.
  • Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2017). Microextraction through supported liquid membranes – Tuning the extraction chemistry for biomedical and pharmaceutical applications.
  • Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2017). Recent trends in drug analysis using liquid-phase microextraction.
  • Pedersen-Bjergaard, Stig; Gjelstad, Astrid & Rasmussen, Knut Einar (2017). Arrested development – Given ongoing challenges in sample preparation and lack of novel alternatives, is it time to give liquid-phase microextraction (LPME) a second chance?. The Analytical Scientist.  ISSN 2051-4077.  49, s 46- 49
  • Ask, Kristine Skoglund; Øiestad, Elisabeth Leere; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2016). Parallel Artificial Liquid Membrane Extraction - En ny metode for fjerning av fosfolipider.
  • Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2016). Parallel Artificial Liquid Membrane Extraction as a Selective, Single-step Sample Preparation Method of Human Plasma Prior to LC-MS.
  • Kuban, Pavel; Boceka, Petr; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2016). Multiple phase micro-electromembrane extraction for selective pretreatment of raw biological samples.
  • Pedersen-Bjergaard, Stig (2016). Liquid-phase microextraction – recent trends and where to go?.
  • Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2016). Drug analysis using liquid-phase microextraction – recent trends and where to go.
  • Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2016). Liquid-phase microextraction – recent trends and where to go?.
  • Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2016). Parallel artificial liquid membrane extraction as an efficient tool for removal of phospholipids from human plasma.
  • Ask, Kristine Skoglund; Halvorsen, Trine Grønhaug; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2015). Phospholipid removal from human plasma samples by Parallel Artificial Liquid Membrane Extraction.
  • Huang, Chuixiu; Seip, Knut Fredrik; Gjelstad, Astrid; Shen, Xiantao & Pedersen-Bjergaard, Stig (2015). Combination of electromembrane extraction and liquid-phase microextraction in a single step: simultaneous extraction of acidic drugs and basic drugs.
  • Lund, Hilde Marie Erøy; Øiestad, Elisabeth Leere; Christophersen, Asbjørg S.; Gjerde, Hallvard & Pedersen-Bjergaard, Stig (2015). Using biological samples to study the use of alcohol and drugs in cohorts.
  • Pedersen-Bjergaard, Stig (2015). Introduction, In Steen Honoré Hansen & Stig Pedersen-Bjergaard (ed.),  Bioanalysis of pharmaceuticals : sample preparation, separation techniques and mass spectrometry.  Wiley-Blackwell.  ISBN 978-111871682-3.  Introduction.  s 1 - 7
  • Seip, Knut Fredrik & Pedersen-Bjergaard, Stig (2015). Microextraction across artificial liquid membranes in 96-well format – A new approach to sample preparation for liquid chromatography.
  • Vårdal, Linda; Øiestad, Elisabeth Leere; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2015). Development of Stable, Selective, and Efficient Artificial Liquid Membranes for Electromembrane Extraction (EME).
  • Ask, Kristine Skoglund; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2014). Dried Blood Spots på vannløselige polymere.
  • Eibak, Lars Erik; Pedersen-Bjergaard, Stig; Rasmussen, Knut Einar & Gjelstad, Astrid (2014). Ekstraksjon av legemidler fra plasma, urin og fullblod ved bruk av elektriske felt.
  • Eibak, Lars Erik; Pedersen-Bjergaard, Stig; Rasmussen, Knut Einar & Gjelstad, Astrid (2014). Water Soluble Biopolymers as Sampling Medium for Dried Blod Spot Analysis.
  • Eibak, Lars Erik; Rasmussen, Knut Einar; Pedersen-Bjergaard, Stig & Gjelstad, Astrid (2014). Parallel Electromembrane Extraction in the 96-well format.
  • Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Challenges and new directions in analytical sample preparation. Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  406(2), s 375- 376 . doi: 10.1007/s00216-013-7457-1
  • Pedersen-Bjergaard, Stig (2014). Analytical microextraction across supported liquid membranes – Principles, applications and recent developments.
  • Pedersen-Bjergaard, Stig (2014). Liquid-phase microextraction - Implementation in micro-chips and 96-well technology.
  • Pedersen-Bjergaard, Stig (2014). Liquid-phase microextraction based on passive diffusion and electrokinetic transport - An overview of different extraction principles and technical configurations.
  • Pedersen-Bjergaard, Stig; Gjelstad, Astrid & Parmer, Marthe Petrine (2014). Liquid-phase microextraction in the 96-well format.
  • Seip, Knut Fredrik; Faizi, Moheba; Vergel, Cristina; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Erratum: Stability and efficiency of supported liquid membranes in electromembrane extraction - A link to solvent properties Microextraction Techniques (Analytical and Bioanalytical Chemistry DOI 10.1007/s00216-013-7418- 8). Analytical and Bioanalytical Chemistry.  ISSN 1618-2642.  406(8), s 2217 . doi: 10.1007/s00216-013-7579-5
  • Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Electromembrane extraction – Distribution or electrophoresis?.
  • Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2014). Elektromembranekstraksjon - Distribusjon eller elektroforese?.
  • Eibak, Lars Erik; Gjelstad, Astrid; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2013). Water Soluble Biopolymers as Sampling Medium for Dried Blood Spot Analysis.
  • Pedersen-Bjergaard, Stig (2013). Electromembrane extraction of drug substances and peptides from small volumes of biological fluids.
  • Pedersen-Bjergaard, Stig (2013). Liquid-phase microextraction – From hollow fibres to micro-chips and 96-well formats.
  • Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2013). Electromembrane Extraction - Distribution or Electrophoresis?.
  • Eibak, Lars Erik; Gjelstad, Astrid; Pedersen-Bjergaard, Stig & Rasmussen, Knut Einar (2012). Rask og fullstendig elektromembran ekstraksjon fra vandige prøver og ubehandlet humant plasma.
  • Eibak, Lars Erik; Gjelstad, Astrid; Pedersen-Bjergaard, Stig & Rasmussen, Knut Einar (2012). Recent advances in Electromembrane Extraction.
  • Gjelstad, Astrid; Eibak, Lars Erik; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Electromembrane Extraction of Basic Drugs from Biological Matrices Spotted on a Water-soluble Polymer as a Novel Sampling Medium.
  • Gjelstad, Astrid; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Developments of Electromembrane Extraction from Post Mortem Blood and Saliva.
  • Gjelstad, Astrid; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Recent Applications of Hollow Fiber Based Microextraction Techniques.
  • Gjelstad, Astrid; Rasmussen, Knut Einar & Pedersen-Bjergaard, Stig (2012). Recent Developments of Electromembrane Extraction From Biological Matrices.
  • Hovde, Marit; Seip, Knut Fredrik; Gjelstad, Astrid & Pedersen-Bjergaard, Stig (2012). Elektromembranekstraksjon av peptider – Hvordan kan vi optimalisere ekstraksjonene?.

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Published Nov. 3, 2010 3:42 PM - Last modified Mar. 9, 2011 9:08 PM