Georg Becher

Professor Emeritus - Department of Chemistry
Room Ø 127
Username
Visiting address Postboks 1033 Blindern 0315 OSLO

Academic interests

Georg  Becher has more than 30 years of continuous involvement in structural characterisation and chemical analysis of organic compounds.

His present main focus is on human exposure assessment for organic pollutants through the use of chemical biomarkers.

He directs research and development of analytical techniques for the determination of trace amounts of organic pollutants in human samples.

State-of -the-art analytical methods are employed such as gas chromatography-high resolution mass spectrometry and liquid chromatography-triple stage mass spectrometry.

The methods have been applied for biomonitoring persistent organic pollutants, such as dioxins, PCBs, brominated flame retardants and perfluorinated alkyl substances in breast milk and blood.

Further, methods are developed for the determination of transformation products of reactive and easily metabolised compounds in urine.

Teaching

Georg Becher contributes to courses in environmental chemistry and separation methods.

Academic background

Georg Becher is Director of the Department of Analytical Chemistry in the Division of Environmental Medicine at the Norwegian Institute of Public Health and Adjunct Professor in Environmental Analytical Chemistry at the University of Oslo.

He obtained his PhD in Physical Organic Chemistry from the University of Göttingen, Germany in 1974.

He has been a postdoctoral fellow at the University of Oslo and the University of Regensburg, Germany, and has been a Visiting Scientists at Lawrence Livermore National Laboratory, Livermore, California, USA.

Prior to his present appointment, he has held positions as researcher at the Centre for Industrial Research, Oslo, Norway and as Head of Research Department of Analytical Chemistry, Norwegian Institute for Water Research, Oslo.

Present trusts held

  • Member of the International Advisory Board of the International Symposium Series on Halogenated Persistent Organic Pollutants
  • National Representative in Division VII on Chemistry and Health of IUPAC

Research cooperation

Becher collaborates with a number of national and international research institutions within research projects financed by the Research Council of Norway and EU’s Seventh Framework Programme.

 

Tags: Bioanalytical Chemistry, Chemistry, Environment and climate, Human exposure assessment, Biomonitoring, Organic environmental toxicants

Publications

  • van den Berg, Martin; Houba, Remko; Leslie, Heather A.; Canton, Rocio F.; Thomsen, Cathrine; Becher, Georg; Alvarez-Pedrerol, Mar; Deu, Jordi Sunyer; Steiner, Markus; Van Tongeren, Martie; Brunekreef, Bert & de Boer, Jacob (2017). Serum levels of decabromodiphenyl ether (BDE-209) in women from different European countries and possible relationships with lifestyle and diet. Environment International.  ISSN 0160-4120.  107, s 16- 24 . doi: 10.1016/j.envint.2017.06.014 Show summary
  • Fromme, Hermann; Becher, Georg; Hilger, Bettina & Völkel, Wolfgang (2016). Brominated flame retardants - Exposure and risk assessment for the general population. International journal of hygiene and environmental health (Print).  ISSN 1438-4639.  219(1), s 1- 23 . doi: 10.1016/j.ijheh.2015.08.004
  • Cequier, Enrique Manciñereas; Marcé, Rosa Maria; Becher, Georg & Thomsen, Cathrine (2015). Comparing human exposure to emerging and legacy flame retardants from the indoor environment and diet with concentrations measured in serum. Environment International.  ISSN 0160-4120.  74, s 54- 59 . doi: 10.1016/j.envint.2014.10.003
  • Cequier, Enrique Manciñereas; Sakhi, Amrit Kaur; Marcé, Rosa Maria; Becher, Georg & Thomsen, Cathrine (2015). Human exposure pathways to organophosphate triesters - A biomonitoring study of mother-child pairs. Environment International.  ISSN 0160-4120.  75, s 159- 165 . doi: 10.1016/j.envint.2014.11.009
  • Joas, Anke; Knudsen, Lisbeth E.; Kolossa-Gehring, Marike; Sepai, Ovnair; Casteleyn, Ludwine; Schoeters, Greet; Angerer, Jürgen; Castano, Argelia; Aerts, Dominique; Biot, Pierre; Horvat, Milena; Bloemen, Louis; Reis, M Fatima; Lupsa, Ioana-Rodica; Katsonouri, Andromachi; Cerna, Milena; Berglund, Marika; Crettaz, Pierre; Rudnai, Peter; Halzlova, Katarina; Mulcahy, Maurice; Gutleb, Arno C.; Fischer, Marc E & Becher, Georg (2015). Policy recommendations and cost implications for a more sustainable framework for European human biomonitoring surveys. Environmental Research.  ISSN 0013-9351.  141, s 42- 57 . doi: 10.1016/j.envres.2014.10.012
  • Kucharska, Agnieszka; Cequier, Enrique Manciñereas; Thomsen, Cathrine; Becher, Georg; Covaci, Adrian & Voorspoels, Stefan (2015). Assessment of human hair as an indicator of exposure to organophosphate flame retardants. Case study on a Norwegian mother-child cohort. Environment International.  ISSN 0160-4120.  83, s 50- 57 . doi: 10.1016/j.envint.2015.05.015
  • Cequier, Enrique Manciñereas; Ionas, Alin C; Covaci, Adrian; Marcé, Rosa Maria; Becher, Georg & Thomsen, Cathrine (2014). Occurrence of a broad range of legacy and emerging flame retardants in indoor environments of Norway. Environmental Science and Technology.  ISSN 0013-936X.  48(12), s 6827- 6835 . doi: 10.1021/es500516u
  • Cequier, Enrique Manciñereas; Marcé, Rosa Maria; Becher, Georg & Thomsen, Cathrine (2014). A high-throughput method for determination of metabolites of organophosphate flame retardants in urine by ultra performance liquid chromatography-high resolution mass spectometry. Analytica Chimica Acta.  ISSN 0003-2670.  845, s 98- 104 . doi: 10.1016/j.aca.2014.06.026
  • Starling, Anne P.; Engel, Stephanie M.; Richardson, David B.; Baird, Donna D.; Haug, Line Småstuen; Stuebe, Alison M.; Klungsøyr, Kari; Harmon, Quaker; Becher, Georg; Thomsen, Cathrine; Sabaredzovic, Azemira; Eggesbø, Merete Åse; Hoppin, Jane A.; Travlos, Gregory S.; Wilson, Ralph E.; Trogstad, Lill; Magnus, Per & Longnecker, Matthew P. (2014). Perfluoroalkyl substances during pregnancy and validated preeclampsia among nulliparous women in the Norwegian mother and child cohort study. American Journal of Epidemiology.  ISSN 0002-9262.  179(7), s 824- 833 . doi: 10.1093/aje/kwt432
  • Starling, Anne P; Engel, Stephanie M; Whitworth, Kristina W; Richardson, David B; Stuebe, Alison M; Daniels, Julie L; Haug, Line Småstuen; Eggesbø, Merete Åse; Becher, Georg; Sabaredzovic, Azemira; Thomsen, Cathrine; Wilson, Ralph E; Travlos, Gregory S; Hoppin, Jane A; Baird, Donna D & Longnecker, Matthew P (2014). Perfluoroalkyl substances and lipid concentrations in plasma during pregnancy among women in the Norwegian Mother and Child Cohort Study. Environment International.  ISSN 0160-4120.  62, s 104- 112 . doi: 10.1016/j.envint.2013.10.004
  • Toft, Gunnar; Lenters, Virissa; Vermeulen, Roel; Heederik, Dick; Thomsen, Cathrine; Becher, Georg; Giwercman, Aleksander; Bizzaro, Davide; Manicardi, Gian Carlo; Spano, Marcello; Rylander, Lars; Pedersen, Henning S; Strucinski, Pawel; Zviezdai, Valentyna & Bonde, Jens Peter (2014). Exposure to polybrominated diphenyl ethers and male reproductive function in Greenland, Poland and Ukraine. Reproductive Toxicology.  ISSN 0890-6238.  43, s 1- 7 . doi: 10.1016/j.reprotox.2013.10.002
  • Zoeller, R. Thomas; Bergman, Åke; Becher, Georg; Bjerregaard, Poul; Bornman, Riana; Brandt, Ingvar; Iguchi, Taisen; Jobling, Susan; Kidd, Karen A.; Kortenkamp, Andreas; Skakkebæk, Niels E.; Toppari, Jorma & Vandenberg, Laura N. (2014). A path forward in the debate over health impacts of endocrine disrupting chemicals. Environmental health.  ISSN 1476-069X.  13 . doi: 10.1186/1476-069X-13-118 Full text in Research Archive.
  • Brantsæter, Anne Lise; Whitworth, K.W.; Ydersbond, T.A.; Haug, Line Småstuen; Haugen, Margaretha; Knutsen, Helle Katrine; Thomsen, Cathrine; Meltzer, Helle Margrete; Becher, Georg; Sabaredzovic, Azemira; Hoppin, J.A.; Eggesbø, Merete Åse & Longnecker, M.P. (2013). Determinants of plasma concentrations of perfluoroalkyl substances in pregnant Norwegian women. Environment International.  ISSN 0160-4120.  54, s 74- 84 . doi: 10.1016/j.envint.2012.12.014
  • Cequier, Enrique Manciñereas; Marcé, Rosa Maria; Becher, Georg & Thomsen, Cathrine (2013). Determination of emerging halogenated flame retardants and polybrominated diphenyl ethers in serum by gas chromatography mass spectrometry. Journal of Chromatography A.  ISSN 0021-9673.  1310, s 126- 132 . doi: 10.1016/j.chroma.2013.08.067
  • Kidd, Karen A; Becher, Georg; Bergman, Åke; Muir, Derek C G & Woodruff, Tracey J (2013). Human and wildlife exposures to EDCs, In Åke Bergman; Jerrold J Heindel; Susan Jobling; Karen A Kidd & R. Thomas Zoeller (ed.),  State of the science of endocrine disrupting chemicals 2012.  United Nations Environment Programme and the World Health Organization.  ISBN 978-92-807-3274-0.  3.  s 189 - 237
  • Kristensen, Susanne Lund; Ramlau-Hansen, Cecilia Høst; Ernst, Erik; Olsen, Sjurdur Frodi; Bonde, Jens Peter; Vested, Anne; Halldorsson, Thorhallur Ingi; Becher, Georg; Haug, Line Småstuen & Toft, Gunnar (2013). Long-term effects of prenatal exposure to perfluoroalkyl substances on female reproduction. Human Reproduction.  ISSN 0268-1161.  28(12), s 3337- 3348 . doi: 10.1093/humrep/det382
  • Lenters, Virissa; Thomsen, Cathrine; Smit, Lidwien A M; Jönsson, Bo A G; Pedersen, Henning S; Ludwicki, Jan K; Zviezdai, Valentyna; Piersma, Aldert H; Toft, Gunnar; Bonde, Jens Peter; Becher, Georg; Vermeulen, Roel & Heederik, Dick (2013). Serum concentrations of polybrominated diphenyl ethers (PBDEs) and a polybrominated biphenyl (PBB) in men from Greenland, Poland and Ukraine. Environment International.  ISSN 0160-4120.  61, s 8- 16 . doi: 10.1016/j.envint.2013.09.001
  • Vested, Anne; Ramlau-Hansen, Cecilia Høst; Olsen, Sjurdur Frodi; Bonde, Jens Peter; Kristensen, Susanne Lund; Halldorsson, Thorhallur Ingi; Becher, Georg; Haug, Line Småstuen; Ernst, Emil Hagen & Toft, Gunnar (2013). Associations of in Utero Exposure to Perfluorinated Alkyl Acids with Human Semen Quality and Reproductive Hormones in Adult Men. Environmental Health Perspectives.  ISSN 0091-6765.  121(4), s 453- 458 . doi: 10.1289/ehp.1205118
  • Wang, Yan; Starling, Anne P; Haug, Line Småstuen; Eggesbø, Merete Åse; Becher, Georg; Thomsen, Cathrine; Travlos, Gregory; King, Debra; Hoppin, Jane A; Rogan, Walter J & Longnecker, Matthew P (2013). Association between perfluoroalkyl substances and thyroid stimulating hormone among pregnant women: a cross-sectional study. Environmental health.  ISSN 1476-069X.  12 . doi: 10.1186/1476-069X-12-76
  • Croes, K; Colles, A; Koppen, G; Govarts, E; Bruckers, L; Van de Mieroop, E; Nelen, V; Covaci, A; Dirtu, A. C; Thomsen, Cathrine; Haug, Line Småstuen; Becher, Georg; Mampaey, M; Schoeters, G; Van Larebeke, N & Baeyens, W (2012). Persistent organic pollutants (POPs) in human milk: a biomonitoring study in rural areas of Flanders (Belgium). Chemosphere.  ISSN 0045-6535.  89(8), s 988- 994 . doi: 10.1016/j.chemosphere.2012.06.058
  • Halldorsson, Thorhallur I.; Rytter, Dorte; Haug, Line Småstuen; Bech, Bodil Hammer; Danielsen, Inge; Becher, Georg; Henriksen, Tine Brink & Olsen, Sjurdur F. (2012). Prenatal Exposure to Perfluorooctanoate and Risk of Overweight at 20 Years of Age: A Prospective Cohort Study. Environmental Health Perspectives.  ISSN 0091-6765.  120(5), s 668- 673 . doi: 10.1289/ehp.1104034
  • Haug, Line Småstuen & Becher, Georg (2012). Biomarkers of exposure: perfluoroalkyl compounds, In Lisbeth E. Knudsen & Domenico Franco Merlo (ed.),  Biomarkers and Human Biomonitoring.  RSC Publishing.  ISBN 9781849732413.  3B.  s 234 - 260
  • Whitworth, Kristina W.; Haug, Line Småstuen; Baird, Donna D.; Becher, Georg; Hoppin, Jane A.; Skjaerven, Rolv; Thomsen, Cathrine; Eggesbø, Merete Åse; Travlos, Gregory; Wilson, Ralph & Longnecker, Matthew P. (2012). Perfluorinated Compounds and Subfecundity in Pregnant Women. Epidemiology.  ISSN 1044-3983.  23(2), s 257- 263 . doi: 10.1097/EDE.0b013e31823b5031
  • Whitworth, Kristina W; Haug, Line Småstuen; Baird, Donna D; Becher, Georg; Hoppin, Jane A; Skjaerven, Rolv; Thomsen, Cathrine; Eggesbø, Merete Åse; Travlos, Gregory; Wilson, Ralph; Cupul-Uicab, Lea A; Brantsæter, Anne Lise & Longnecker, Matthew P (2012). Perfluorinated Compounds in Relation to Birth Weight in the Norwegian Mother and Child Cohort Study. American Journal of Epidemiology.  ISSN 0002-9262.  175(12), s 1209- 1216 . doi: 10.1093/aje/kwr459
  • Eggesbø, Merete Åse; Thomsen, Cathrine; Jørgensen, Jens V; Becher, Georg; Odland, Jon Øyvind & Longnecker, Matthew P (2011). Associations between brominated flame retardants in human milk and thyroid-stimulating hormone (TSH) in neonates. Environmental Research.  ISSN 0013-9351.  111(6), s 737- 743 . doi: 10.1016/j.envres.2011.05.004
  • Haug, Line Småstuen; Huber, Sandra; Becher, Georg & Thomsen, Cathrine (2011). Characterisation of human exposure pathways to perfluorinated compounds - Comparing exposure estimates with biomarkers of exposure. Environment International.  ISSN 0160-4120.  37(4), s 687- 693 . doi: 10.1016/j.envint.2011.01.011
  • Haug, Line Småstuen; Huber, Sandra; Schlabach, Martin; Becher, Georg & Thomsen, Cathrine (2011). Investigation on per- and polyfluorinated compounds in paired samples of house dust and indoor air from norwegian homes. Environmental Science and Technology.  ISSN 0013-936X.  45(19), s 7991- 7998 . doi: 10.1021/es103456h
  • Knutsen, Helle Katrine; Kvalem, Helen Engelstad; Haugen, Margaretha; Meltzer, Helle Margrete; Brantsæter, Anne Lise; Alexander, Jan; Päpke, Olaf; Liane, Veronica Horpestad; Becher, Georg & Thomsen, Cathrine (2011). Sex, BMI and age in addition to dietary intakes influence blood concentrations and congener profiles of dioxins and PCBs. Molecular Nutrition & Food Research.  ISSN 1613-4125.  55(5), s 772- 782 . doi: 10.1002/mnfr.201000243
  • Freberg, Baard Ingegerdsson; Haug, Line Småstuen; Olsen, Raymond; Daae, Hanne Line; Hersson, Merete; Thomsen, Cathrine; Syvert, Thorud; Becher, Georg; Molander, Pål & Ellingsen, Dag (2010). Occupational Exposure to Airborne Perfluorinated Compounds during Professional Ski Waxing. Environmental Science and Technology.  ISSN 0013-936X.  44(19), s 7723- 7728 . doi: 10.1021/es102033k
  • Frederiksen, Marie; Thomsen, Cathrine; Frøshaug, May; Vorkamp, Katrin; Thomsen, Marianne; Becher, Georg & Knudsen, Lisbeth E (2010). Polybrominated diphenyl ethers in paired samples of maternal and umbilical cord blood plasma and associations with house dust in a Danish cohort. International journal of hygiene and environmental health (Print).  ISSN 1438-4639.  213(4), s 233- 242 . doi: 10.1016/j.ijheh.2010.04.008
  • Haug, Line Småstuen; Salihovic, Samira; Jogsten, Ingrid Ericson; Thomsen, Cathrine; van Bavel, Bert; Lindström, Gunilla & Becher, Georg (2010). Levels in food and beverages and daily intake of perfluorinated compounds in Norway. Chemosphere.  ISSN 0045-6535.  80(10), s 1137- 1143 . doi: 10.1016/j.chemosphere.2010.06.023
  • Haug, Line Småstuen; Thomsen, Cathrine; Brantsæter, Anne Lise; Kvalem, Helen Engelstad; Haugen, Margaretha; Becher, Georg; Alexander, Jan; Meltzer, Helle Margrete & Knutsen, Helle Katrine (2010). Diet and particularly seafood are major sources of perfluorinated compounds in humans. Environment International.  ISSN 0160-4120.  36(7), s 772- 778 . doi: 10.1016/j.envint.2010.05.016
  • Thomsen, Cathrine; Stigum, Hein; Frøshaug, May; Broadwell, Sharon Lynn; Becher, Georg & Eggesbø, Merete Åse (2010). Determinants of brominated flame retardants in breast milk from a large scale Norwegian study. Environment International.  ISSN 0160-4120.  36(1), s 68- 74 . doi: 10.1016/j.envint.2009.10.002
  • Duale, Nur; Bjellaas, Thomas; Alexander, Jan; Becher, Georg; Haugen, Margaretha; Paulsen, Jan Erik; Frandsen, Henrik; Olesen, Pelle Thonning & Brunborg, Gunnar (2009). Biomarkers of human exposure to acrylamide and relation to polymorphisms in metabolizing genes. Toxicological Sciences.  ISSN 1096-6080.  108(1), s 90- 99 . doi: 10.1093/toxsci/kfn269
  • Eggesbø, Merete Åse; Stigum, H; Longnecker, MP; Polder, Anuschka; Aldrin, Magne; Basso, O; Thomsen, C; Skaare, JU; Becher, G & Magnus, P (2009). Levels of hexachlorobenzene (HCB) in breast milk in relation to birth weight in a Norwegian cohort. Environmental Research.  ISSN 0013-9351.  109(5), s 559- 566 . doi: 10.1016/j.envres.2009.04.001
  • Haug, Line Småstuen; Thomsen, Cathrine & Becher, Georg (2009). A sensitive method for determination of a broad range of perfluorinated compounds in serum suitable for large-scale human biomonitoring. Journal of Chromatography A.  ISSN 0021-9673.  1216(3), s 385- 393 . doi: 10.1016/j.chroma.2008.10.113
  • Haug, Line Småstuen; Thomsen, Cathrine & Becher, Georg (2009). Time trends and the influence of age and gender on serum concentrations of perluorinated compounds in archived human samples. Environmental Science and Technology.  ISSN 0013-936X.  43(6), s 2131- 2136 . doi: 10.1021/es802827u
  • Kvalem, Helen Engelstad; Knutsen, Helle Katrine; Thomsen, Cathrine; Haugen, Margaretha; Stigum, Hein; Brantsæter, Anne Lise; Frøshaug, May; Lohmann, Nina; Päpke, Olaf; Becher, Georg; Alexander, Jan & Meltzer, Helle Margrete (2009). Role of dietary patterns for dioxin and PCB exposure. Molecular Nutrition & Food Research.  ISSN 1613-4125.  53(11), s 1438- 1451 . doi: 10.1002/mnfr.200800462 Show summary
  • Brantsæter, Anne Lise; Haugen, Margaretha; de Mul, Anika; Bjellaas, Thomas; Becher, Georg; Van Klaveren, Jacob; Alexander, Jan & Meltzer, Helle Margrete (2008). Exploration of different methods to assess dietary acrylamide exposure in pregnant women participating in the Norwegian Mother and Child Cohort Study (MoBa). Food and Chemical Toxicology.  ISSN 0278-6915.  46(8), s 2808- 2814 . doi: 10.1016/j.fct.2008.05.020
  • Eppe, Gauthier; Van Cleuvenbergen, Rudy; Haug, Line Småstuen; Boulanger, Bruno; Becher, Georg & De Pauw, Edwin (2008). Empirical relationship between precision and ultra-trace concentrations of PCDD/Fs and dioxin-like PCBs in biological matrices. Chemosphere.  ISSN 0045-6535.  71(2), s 379- 387 . doi: 10.1016/j.chemosphere.2007.08.046
  • Haug, Line Småstuen; Thomsen, Cathrine; Liane, Veronica Horpestad & Becher, Georg (2008). Comparison of GC and LC determinations of hexabromocyclododecane in biological samples - Results from two interlaboratory comparison studies. Chemosphere.  ISSN 0045-6535.  71(6), s 1087- 1092 . doi: 10.1016/j.chemosphere.2007.10.044
  • Janak, Karel; Sellström, Ulla; Johansson, A-K; Becher, Georg; de Wit, Cynthia; Lindberg, Peter & Helander, Björn (2008). Enantiomer-specific accumulation of hexabromocyclododecanes in eggs of predatory birds. Chemosphere.  ISSN 0045-6535.  73(1), s S193- S200 . doi: 10.1016/j.chemosphere.2007.03.077
  • Knutsen, Helle Katrine; Kvalem, Helen Engelstad; Thomsen, Cathrine; Frøshaug, May; Haugen, Margaretha; Becher, Georg; Alexander, Jan & Meltzer, Helle Margrete (2008). Dietary exposure to brominated flame retardants correlates with male blood levels in a selected group of Norwegians with a wide range of seafood consumption. Molecular Nutrition & Food Research.  ISSN 1613-4125.  52(2), s 217- 227 . doi: 10.1002/mnfr.200700096
  • Thomsen, Cathrine; Knutsen, Helle Katrine; Liane, Veronica Horpestad; Frøshaug, May; Kvalem, Helen Engelstad; Haugen, Margaretha; Meltzer, Helle Margrete; Alexander, Jan & Becher, Georg (2008). Consumption of fish from a contaminated lake strongly affects the concentrations of polybrominated diphenyl ethers and hexabromocyclododecane in serum. Molecular Nutrition & Food Research.  ISSN 1613-4125.  52(2), s 228- 237 . doi: 10.1002/mnfr.200700123
  • Bjellaas, Thomas; Stølen, Linn H.; Haugen, Margaretha; Paulsen, Jan E.; Alexander, Jan; Lundanes, Elsa & Becher, Georg (2007). Urinary acrylamide metabolites as biomarkers for short-term dietary exposure to acrylamide. Food and Chemical Toxicology.  ISSN 0278-6915.  45(6), s 1020- 1026 . doi: 10.1016/j.fct.2006.12.007
  • Bjellaas, Thomas; Olesen, Pelle Thonning; Frandsen, Henrik; Haugen, Margaretha; Stølen, Linn Helene; Paulsen, Jan Erik; Alexander, Jan; Lundanes, Elsa & Becher, Georg (2007). Comparison of estimated dietary intake of acrylamide with hemoglobin adducts of acrylamide and glycidamide. Toxicological Sciences.  ISSN 1096-6080.  98(1), s 110- 117 . doi: 10.1093/toxsci/kfm091
  • Bjellaas, Thomas; Stølen, Linn Helene; Haugen, Margaretha; Paulsen, Jan Erik; Alexander, Jan; Lundanes, Elsa & Becher, Georg (2007). Urinary acrylamide metabolites as biomarkers for short-term dietary exposure to acrylamide. Food and Chemical Toxicology.  ISSN 0278-6915.  45(6), s 1020- 1026 . doi: 10.1016/j.fct.2006.12.007
  • Bjellaas, Thomas; Ølstørn, Hege Benedikte Asvald; Becher, Georg; Alexander, Jan; Knutsen, Svein Halvor & Paulsen, Jan Erik (2007). Urinary metabolites as biomarkers of acrylamide exposure in mice following dietary crisp bread administration or subcutaneous injection. Toxicological Sciences.  ISSN 1096-6080.  100(2), s 374- 380 . doi: 10.1093/toxsci/kfm234
  • Gjessing, Egil T; Steiro, Christine; Becher, Georg & Christy, Alfred A. (2007). Reduced analytical availability of polychlorinated biphenyls (PCB's) in colored surface water. Chemosphere.  ISSN 0045-6535.  66(4), s 644- 649 . doi: 10.1016/j.chemosphere.2006.07.086 Show summary
  • Thomsen, Cathrine; Knutsen, Helle Katrine; Liane, Veronica Horpestad; Frøshaug, May; Kvalem, Helen Engelstad; Haugen, Margaretha; Meltzer, Helle Margrete; Alexander, Jan & Becher, Georg (2007). Dietary exposure and serum PBDE concentrations correlate well among consumers of fish from a PBDE contaminated lake. Organohalogen Compounds.  ISSN 1026-4892.  69, s 770- 773
  • Thomsen, Cathrine; Liane, Veronica Horpestad & Becher, Georg (2007). Automated solid-phase extraction for the determination of polybrominated diphenyl ethers and polychlorinated biphenyls in serum - application on archived Norwegian samples from 1977 to 2003. Journal of chromatography. B.  ISSN 1570-0232.  846(1-2), s 252- 263 . doi: 10.1016/j.jchromb.2006.09.011 Show summary
  • Thomsen, Cathrine; Molander, Pål; Daae, HL; Janak, Karel; Frøshaug, May; Liane, Veronica Horpestad; Thorud, S; Becher, Georg & Dybing, Erik (2007). Occupational exposure to hexabromocyclododecane at an industrial plant. Environmental Science and Technology.  ISSN 0013-936X.  41(15), s 5210- 5216 . doi: 10.1021/es0702622
  • Janak, Karel; Zegers, B.N.; Mets, A.; Hamers, T.; Becher, Georg & Boon, J.P. (2006). Enantiomer fractions of hexabromocyclododecane in marine mammals from Western European seas with evidence for enantiomer-specific biotransformation. Organohalogen Compounds.  ISSN 1026-4892.  68, s 655- 658
  • Kvalem, Helen Engelstad; Knutsen, Helle Katrine; Thomsen, Cathrine; Haugen, Margaretha; Stigum, Hein; Alexander, Jan; Becher, Georg & Meltzer, Helle Margrete (2006). The predictive value of dietary intake estimations on serum levels of some non-dioxin PCBs. Organohalogen Compounds.  ISSN 1026-4892.  68, s 1517- 1520
  • Bjellaas, Thomas; Janak, Karel; Lundanes, Elsa; Kronberg, Leif & Becher, Georg (2005). Determination and quantification of urinary metabolites after dietary exposure to acrylamide. Xenobiotica.  ISSN 0049-8254.  35, s 1003- 1018
  • Bjellaas, Thomas; Janak, Karel; Lundanes, Elsa; Kronberg, Leif & Becher, Georg (2005). Determination and quantification of urinary metabolites after dietary exposure to acrylamide. Xenobiotica.  ISSN 0049-8254.  35(10/11), s 1003- 1018
  • Eggesbø, Merete Åse; Stigum, Hein; Polder, Anuschka; Skåre, Janneche Utne; Becher, Georg & Magnus, Per (2005). Hexachlorobenzene is associated with low birth weight among Norwegian mothers. Organohalogen Compounds.  ISSN 1026-4892.  67, s 1549- 1551
  • Janák, Karel; Sellström, Ulla; Johansson, Anna-Karin; Becher, Georg; de Wit, Cynthia; Lindberg, Peter & Helander, Björn (2005). Enantiomer-specific accumulation pattern of hexabromocyclododecane in eggs of predatory birds breeding in Sweden. Organohalogen Compounds.  ISSN 1026-4892.  67, s 204- 207
  • Law, RJ; Kohler, M; Heeb, NV; Gerecke, AC; Schmid, P; Voorspoels, S; Covaci, A; Becher, Georg; Janak, Karel & Thomsen, Cathrine (2005). Hexabromocyclododecane Challenges Scientists and Regulators. Environmental Science and Technology. News & research.  ISSN 1086-931X.  39, s 281A . doi: 10.1021/es053302f
  • Becher, Georg; Haug, Line Småstuen & Thomsen, Cathrine (2004). World-wide comparison on the quality of analytical determinations of PCDDs/PCDFs and dioxin-like PCBs in food. Talanta: The International Journal of Pure and Applied Analytical Chemistry.  ISSN 0039-9140.  63, s 1115

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  • Zoeller, R. Thomas; Bergman, Åke; Becher, Georg; Bjerregaard, Poul; Bomman, Riana; Brandt, Ingvar; Iguchi, Taisen; Jobling, Susan; Kidd, Karen A; Kortenkamp, Andreas; Skakkebæk, Niels; Toppari, Jorma & Vandenberg, Laura (2016). The Path Forward on Endocrine Disruptors Requires Focus on the Basics. Toxicological Sciences.  ISSN 1096-6080.  149(2), s 272- 272 . doi: 10.1093/toxsci/kfv255
  • Cequier, Enrique Manciñereas; Marcé, Rosa Maria; Becher, Georg & Thomsen, Cathrine (2014). Identifying human exposure pathways to flame retardants.
  • Bergman, Åke; Andersson, Anna-Maria; Becher, Georg; van den Berg, Martin; Blumberg, Bruce; Bjerregaard, Poul; Bornehag, Carl-Gustaf; Bornman, Riana; Brandt, Ingvar; Brian, Jayne V.; Casey, Stephanie C.; Fowler, Paul A.; Frouin, Heloise; Giudice, Linda C.; Iguchi, Taisen; Hass, Ulla; Jobling, Susan; Juul, Anders; Kidd, Karen A.; Kortenkamp, Andreas; Lind, Monica; Martin, Olwenn V.; Muir, Derek; Ochieng, Roseline; Olea, Nicolas; Norrgren, Leif; Ropstad, Erik; Ross, Peter S.; Rudén, Christina; Scheringer, Martin; Skakkebæk, Niels E.; Söder, Olle; Sonnenschein, Carlos; Soto, Ana; Swan, Shanna; Toppari, Jorma; Tyler, Charles R.; Vandenberg, Laura N.; Vinggaard, Anne Marie; Wiberg, Karin & Zoeller, R. Thomas (2013). Science and policy on endocrine disrupters must not be mixed: a reply to a "common sense" intervention by toxicology journal editors. Environmental health.  ISSN 1476-069X.  12:69 . doi: 10.1186/1476-069X-12-69
  • Bergman, Åke; Heindel, Jerrold J; Kasten, Tim; Kidd, Karen A.; Jobling, Susan; Neira, Maria; Zoeller, R. Thomas; Becher, Georg; Bjerregaard, Poul; Bornman, Riana; Brandt, Ingvar; Kortenkamp, Andreas; Muir, Derek; Drisse, Marie-Noël Brune; Ochieng, Roseline; Skakkebæk, Niels E.; Byléhn, Agneta Sundén; Iguchi, Taisen; Toppari, Jorma & Woodruff, Tracey J. (2013). The impact of endocrine disruption: a consensus statement on the state of the science. Environmental Health Perspectives.  ISSN 0091-6765.  121(4), s A104- A106 . doi: 10.1289/ehp.1205448
  • Kristensen, Susanne Lund; Ramlau-Hansen, Cecilia Høst; Ernst, Erik; Olsen, Sjurdur Frodi; Bonde, Jens Peter; Vested, Anne; Halldorsson, Thorhallur Ingi; Becher, Georg; Haug, Line Småstuen & Toft, Gunnar (2013). Long term effects of in-utero exposure to perfluorinated chemicals on female reproduction. Acta Obstetricia et Gynecologica Scandinavica.  ISSN 0001-6349.  92, s 22- 23
  • Vested, Anne; Ramlau-Hansen, Cecilia Høst; Olsen, SF; Bonde, JP; Kristensen, S.L.; Halldorsson, TI; Becher, Georg; Haug, Line Småstuen; Ernst, Emil Hagen & Toft, G (2013). Effects of in utero exposure to PFOA and PFOS on human semen quality and hormone profile. Acta Obstetricia et Gynecologica Scandinavica.  ISSN 0001-6349.  92, s 32- 32
  • Bremnes, Nanna Margrethe Bruun; Haug, Line Småstuen; Broadwell, Sharon Lynn & Becher, Georg (2012). Interlaboratory comparison on POPs in food 2012. Thirteenth round of an international study. rapport Nasjonalt folkehelseinstitutt. 2012:5.
  • Gutzkow, Kristine Bjerve; Haug, Line Småstuen; Thomsen, Cathrine; Sabaredzovic, Azemira; Becher, Georg & Brunborg, Gunnar (2012). Placental transfer of perfluorinated compounds is selective. A Norwegian Mother and Child sub-cohort study. International journal of hygiene and environmental health (Print).  ISSN 1438-4639.  215(2), s 216- 219 . doi: 10.1016/j.ijheh.2011.08.011
  • Liane, Veronica Horpestad & Becher, Georg (2011). Interlaboratory comparison on POPs in food 2011. Twelfth round of an international study. rapport Nasjonalt folkehelseinstitutt. 2011:7.
  • Thomsen, Cathrine; Haug, Line Småstuen; Frøshaug, May; Huber, Sandra; Schlabach, Martin & Becher, Georg (2011). Characterization of exposure pathways to PBDEs and HBCD – comparing exposure estimates with biomonitoring.
  • Haug, Line Småstuen; Huber, Sandra; Schlabach, Martin; Becher, Georg & Thomsen, Cathrine (2010). Do Perfluorinated Compounds in Dust from Norwegian Houses affect the Serum Levels of their Residents?.
  • Haug, Line Småstuen; Huber, Sandra; Schlabach, Martin; Becher, Georg & Thomsen, Cathrine (2010). Do Perfluorinated Compounds in Dust from Norwegian Houses affect the Serum Levels of their Residents?. Organohalogen Compounds.  ISSN 1026-4892.  72
  • Liane, Veronica Horpestad & Becher, Georg (2010). Interlaboratory comparison on POPs in food 2010: Eleventh round of an international study. rapport Nasjonalt folkehelseinstitutt. 2010:5.
  • Thomsen, Cathrine; Haug, Line Småstuen; Stigum, Hein; Frøshaug, May; Broadwell, Sharon Lynn & Becher, Georg (2010). Changes in Concentrations of Perfluorinated Compounds, Polybrominated Biphenyl Ethers, and Polychlorinated Biphenyls in Norwegian Breast-Milk during Twelve Months of Lactation. Environmental Science and Technology.  ISSN 0013-936X.  44(24), s 9550- 9556 . doi: 10.1021/es1021922
  • Haug, Line Småstuen; Salihovic, S; Jogsten, IE; Thomsen, Cathrine; van Bavel, B; Lindström, G & Becher, Georg (2009). A wide range of perfluorinated compounds detected in foodstuff and drinking water from Norway. Organohalogen Compounds.  ISSN 1026-4892.  71, s 1133- 1138
  • Haug, Line Småstuen; Thomsen, Cathrine; Meltzer, Helle Margrete; Becher, Georg & Knutsen, Helle Katrine (2009). Concentrations of PFCs in serum are associated with seafood consumption in a Norwegian cohort. Organohalogen Compounds.  ISSN 1026-4892.  71, s 654- 658
  • Liane, Veronica Horpestad & Becher, Georg (2009). Interlaboratory on Dioxins in Food 2009. Tenth Round of an International Study. rapport Nasjonalt folkehelseinstitutt. 2009:10. Full text in Research Archive.
  • Thomsen, Cathrine; Frøshaug, May; Liane, Veronica Horpestad; Broadwell, Sharon Lynn & Becher, Georg (2009). Changes of PCBs, PBDEs and HBCD in breast milk during up to ten months of lactation. Organohalogen Compounds.  ISSN 1026-4892.  71, s 1183- 1186
  • Haug, Line Småstuen; Thomsen, Cathrine & Becher, Georg (2008). A simple and sensitive method for determination of a wide range of polyfluorinated compounds in serum. Organohalogen Compounds.  ISSN 1026-4892.  70, s 630- 633
  • Liane, Veronica Horpestad; Bjellaas, Thomas & Becher, Georg (2008). Interlaboratory comparison on dioxins in food 2008. Ninth round of an international study. rapport Nasjonalt folkehelseinstitutt. 2008:13.
  • Bjellaas, Thomas; Becher, Georg & Lundanes, Elsa (2007). Biomarkers of dietary exposure to acrylamide. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. No.590.
  • Eppe, Gauthier; van Cleuvenbergen, Rudy; Haug, Line Småstuen; Becher, Georg & de Pauw, Edwin (2007). The dioxin function as a useful tool for assessing dioxin laboratory performance in proficiency tests. Organohalogen Compounds.  ISSN 1026-4892.  69, s 986- 989
  • Knutsen, Helle Katrine; Kvalem, Helen Engelstad; Thomsen, Cathrine; Frøshaug, May; Haugen, Margaretha; Becher, Georg; Alexander, Jan & Meltzer, Helle Margrete (2007). Dietary exposure to polybrominated diphenyl ethers correlate with male blood levels in a selected group of Norwegians with a wide range of seafood consumption. Toxicology Letters.  ISSN 0378-4274.  172, s S105 . doi: 10.1016/j.toxlet.2007.05.284
  • Bjellaas, Thomas; Stølen, Linn Helene; Haugen, Margaretha; Paulsen, Jan Erik; Alexander, Jan; Lundanes, Elsa & Becher, Georg (2006). Identification And Quantification Of Urinary Metabolites From Short-Term Exposure To Acrylamide.
  • Eggesbø, Merete Åse; Stigum, Hein; Polder, A.; Becher, Georg; Thomsen, Cathrine; Skaare, J.U. & Magnus, Per (2006). Exposure to PCBs and other POPs and reproductive outcome in The Norwegian HUMIS Study. Organohalogen Compounds.  ISSN 1026-4892.  68, s 805- 808
  • Gjessing, Håkon K.; Steiro, Christine; Becher, Georg & Christy, Alfred (2006). Redusert analytisk tilgjengelighet for PCB i humusfarget vann. Vann.  ISSN 0042-2592.  41(2), s 118- 126
  • Haug, Line Småstuen & Becher, Georg (2006). Interlaboratory Comparison on Dioxins in Food 2006. Seventh Round of an International Study. rapport Nasjonalt folkehelseinstitutt. 2006:7.
  • Haug, Line Småstuen; Thomsen, Cathrine & Becher, Georg (2006). Comparing GC-MS and LC-MS for the determination of HBCD in food- Results from an interlaboratory comparison study. Organohalogen Compounds.  ISSN 1026-4892.  68, s 89- 92
  • Thomsen, Cathrine; Liane, Veronica Horpestad; Frøshaug, May & Becher, Georg (2006). The concentrations of PBDEs in serum from a group of high consumers of fish from a PBDE contaminted lake in Norway. Organohalogen Compounds.  ISSN 1026-4892.  68, s 786- 789
  • Bjellaas, Thomas; Lundanes, Elsa; Janek, Karel & Becher, Georg (2005). Determination of acrylamide metabolites in human urine using solid-phase extraction and LC-MSMS.
  • Stigum, Hein; Eggesbø, Merete Åse; Polder, A; Skaare, Janneche Utne; Becher, Georg; Nicolaysen, Tove; Thomsen, Cathrine & Magnus, Per (2005). Dioxin and dioxin-like compounds in breast milk from Norwegian mothers. Organohalogen Compounds.  ISSN 1026-4892.  67, s 1560- 1563
  • Bjellaas, Thomas; Janak, Karel; Lundanes, Elsa & Becher, Georg (2005). Determination of acrylamide metabolites in human urine using solid-phase extraction and LC-MS/MS detection.
  • Haug, Line Småstuen & Becher, Georg (2005). Interlaboratory Comparison on Dioxins in Food 2005. Sixth Round of an International Study. rapport Nasjonalt folkehelseinstitutt. 2005:7.
  • Haug, Line Småstuen; Thomsen, Cathrine & Becher, Georg (2005). The quality of PBDE analysis in food - Results from an interlaboratory comparison study. Organohalogen Compounds.  ISSN 1026-4892.  67, s 622- 625
  • Knutsen, Helle Katrine; Bergsten, Christina; Thomsen, Cathrine; Sletta, Are; Becher, Georg; Alexander, Jan & Meltzer, Helle Margrete (2005). Preliminary assessment of PBDE exposure from food in Norway. Organohalogen Compounds.  ISSN 1026-4892.  67, s 1624- 1627
  • Kvalem, Helen Engelstad; Knutsen, Helle Katrine; Thomsen, Cathrine; Haugen, Alice Margaretha; Bergsten, Christina; Sletta, Are; Trygg, Kerstin Ulla; Alexander, Jan; Becher, Georg & Meltzer, Helle Margrete (2005). Dietary dioxin and PCB exposure in a selected group of Norwegians. Organohalogen Compounds.  ISSN 1026-4892.  67, s 1741- 1744
  • Thomsen, Cathrine; Frøshaug, May; Broadwell, Sharon Lynn; Becher, Georg & Eggesbø, Merete Åse (2005). Levels of brominated flame retardants in milk from the Norwegian human milk study: HUMIS. Organohalogen Compounds.  ISSN 1026-4892.  67, s 509- 512
  • Thomsen, Cathrine; Liane, Veronica Horpestad; Frøshaug, May & Becher, Georg (2005). Levels of brominated flame retardants in milk from the Norwegian human milk study: HUMIS. Organohalogen Compounds.  ISSN 1026-4892.  67, s 658- 661
  • Polder, A; Thomsen, Cathrine; Becher, Georg; Skaare, Janneche Utne; Løken, Katarina & Eggesbø, Merete Åse (2004). The Norwegian Human Milk Study HUMIS – Variations in Levels of Chlorinated Pesticides, PCBs and PBDEs in Norwegian Breast Milk. Organohalogen Compounds.  ISSN 1026-4892.
  • Vogt, Rolf David; Becher, Georg & Gjessing, Egil (2004). Changes in quality and quantity of NOM - Possible causes and concequences.

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Published Nov. 11, 2010 9:00 AM - Last modified Apr. 6, 2017 12:04 PM

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