oru.sePublications
Change search
Refine search result
1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Abalos, M.
    et al.
    MTM Research Center, Örebro University, Örebro, Sweden.
    Abad, E.
    Laboratory of Dioxins, Mass Spectrometry Laboratory, Environmental Chemistry Dept., IDÆA-CSIC, Barcelona, Spain.
    van Leeuwen, S. P. J.
    Institute for Environmental Studies (IVM), Vrije University, Amsterdam, Netherlands; RIKILT-Institute of Food Safety, Wageningen, Netherlands.
    Lindström, Gunilla
    Örebro University, School of Science and Technology.
    Fiedler, Heidelore
    UNEP Chemicals, Châtelaine GE, Switzerland.
    de Boer, J.
    Institute for Environmental Studies (IVM), Vrije University, Amsterdam, Netherlands.
    van Bavel, Bert
    Results for PCDD/PCDF and dl-PCBs in the first round of UNEPs biennial global interlaboratory assessment on persistent organic pollutants2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 98-109Article in journal (Refereed)
    Abstract [en]

    The first worldwide interlaboratory assesment on persistent organic pollutants (POPs) under the Stockholm Convention was organized in the Asian/Pacific, Latin American and African regions during 2009-11.

    A relatively large number of laboratories reported data for the PCDDs/PCDFs and dioxin-like PCBs, especially in the Asian region. Within the Asian region, several participants used high-resolution GC/high-resolution MS systems optimized for dioxin analysis. The availibility of High-resolution mass spectrometer instrumentation is limited in the Latin America and African regions, although recently several new laboratories for dioxins have started in the Latin American region.

  • 2.
    Bogdal, C.
    et al.
    Eidgenössische Technische Hochschule Zürich (ETH), Institute for Chemical and Bioengineering, Zürich, Switzerland; Eidgenössische Technische Hochschule Zürich (ETH), International Panel on Chemical Pollution, Zürich, Switzerland.
    Abad, E.
    Laboratory of Dioxins, Department of Environmental Chemistry, IDÆA-CSIC, Barcelona, Spain.
    Abalos, M.
    Laboratory of Dioxins, Department of Environmental Chemistry, IDÆA-CSIC, Barcelona, Spain.
    van Bavel, Bert
    Örebro University, School of Science and Technology.
    Hagberg, Jessika
    Örebro University, School of Science and Technology.
    Scheringer, M.
    Eidgenössische Technische Hochschule (ETH), Institute for Chemical and Bioengineering, Zürich, Switzerland; Eidgenössische Technische Hochschule (ETH), International Panel on Chemical Pollution, Zürich, Switzerland.
    Fiedler, Heidelore
    UNEP Chemicals, Châtelaine GE, Switzerland.
    Worldwide distribution of persistent organic pollutants in air, including results of air monitoring by passive air sampling in five continents2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 150-161Article in journal (Refereed)
    Abstract [en]

    This article provides an overview of concentrations of persistent organic pollutants (POPs) in ambient air on a global scale, including recent measurements and an extensive compilation of literature data. In this study, passive air samplers (PASs) were successfully employed to assess concentrations of POPs in ambient air from Africa, Latin America, the Caribbean, and the Pacific Islands. The project aimed to extend the knowledge on environmental contamination by POPs in these regions, where the currently available data are still limited to a few monitoring studies.

    The ambient air concentrations of PCB in Africa were relatively high when compared to other regions. Waste, in particular electronic waste, exported to Africa from industrialized countries may be a possible source of PCB in Africa, where PCB have never been extensively used or produced. For DDTs, the wide range of concentrations and particularly high levels in some countries of Africa and the Pacific Islands reflect the use of DDT for malaria control in these regions. For PCDD/PCDF, concentrations in Africa and Latin America are similar to or even higher than in Europe, probably due to unfavorable combustion practices of chlorine-containing materials.

    The data support the needs for further monitoring in developing countries and countries with economies in transition, and action to reduce environmental contamination by, and human exposure to, hazardous chemicals.

  • 3.
    Fang, Wei
    et al.
    Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, Hubei, PR China.
    Santosh, Lamichhane
    Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland.
    Oresic, Matej
    Örebro University, School of Medical Sciences. Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, Hubei, PR China; Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland.
    Hyötyläinen, Tuulia
    Örebro University, School of Science and Technology.
    Lipidomes in health and disease: Analytical strategies and considerations2019In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 120, article id 115664Article, review/survey (Refereed)
    Abstract [en]

    Lipidomics is a rapidly-growing field which focuses on global characterization of lipids at molecular and systems levels. As small changes in the concentrations of lipids may have important physiological consequences, much attention in the field has recently been paid to more accurate quantitation and identification of lipids. Community-wide efforts have been initiated, aiming to develop best practices for lipidomic analyses and reporting of lipidomic data. Nevertheless, current approaches for comprehensive analysis of lipidomes have some inherent challenges and limitations. Additionally, there is, currently, limited knowledge concerning the impacts of various external and internal exposures on lipid levels. In this review, we discuss the recent progress in lipidomics analysis, with a primary focus on analytical approaches, as well as on the different sources of variation in quantifying lipid levels, both technical and biological.

  • 4.
    Fiedler, Heidelore
    et al.
    UNEP/DTIE Chemicals Branch, Châtelaine GE, Switzerland.
    Abad, E.
    Laboratory of Dioxins, Environmental Chemistry Department, IDÆA-CSIC Barcelona, Spain.
    van Bavel, Bert
    Örebro University, School of Science and Technology.
    de Boer, J.
    Institute for Environmental Studies (IVM), Vrije University Amsterdam, Amsterdam, Netherlands.
    Bogdal, C.
    Institute of Chemical and Bioingeneering, Swiss Federal Institute of Technology, Zürich, Switzerland.
    Malisch, R.
    State Institute for Chemical and Veterinary Analysis of Food, Freiburg, Germany.
    The need for capacity building and first results for the Stockholm convention global monitoring plan2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 72-84Article in journal (Refereed)
    Abstract [en]

    The Stockholm Convention on Persistent Organic Pollutants (POPs) established an effectiveness evaluation to assess the efficiency of measures taken by Parties under the Convention. Among these measures, a Global Monitoring Plan requires countries to analyze core matrices for POPs. To assist countries in setting up networks for these core matrices and to generate high-quality, comparable results, the United Nations Environment Program has implemented projects in 32 developing countries. The results demonstrate the worldwide presence of POPs in air and in humans, although at different scales.

  • 5.
    Kärrman, Anna
    et al.
    Örebro University, School of Science and Technology.
    Lindström, Gunilla
    Örebro University, School of Science and Technology.
    Trends, analytical methods and precision in the determination of perfluoroalkyl acids in human milk2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 118-128Article in journal (Refereed)
    Abstract [en]

    The review describes trends and precision in analytical methods measuring perfluoroalkyl acids (PFAAs) in human milk [e.g., perfluorooctane sulfonic acid (PFOS)]. A worldwide interlaboratory proficiency test with two human milk samples is reported showing a large inter-laboratory variation. High relative standard deviations (RSDs) for the 20 laboratories for PFOS (38, 49%) and perfluorooctanoic acid (PFOA, 53, 71%) indicates that there is a performance variation in the current data.

    Assessing the worldwide effectiveness of declining levels as a result of regulations and bans demands analytical precision and accuracy. The Stockholm Convention aims to reduce human levels by 20%. Assessing such a reduction of PFOS levels in human milk is currently impossible due to analytical difficulties. Crucial for improving precision and accuracy is better control of contamination and achieving higher sensitivity and selectivity in quantitative analysis.

  • 6.
    Lal, Vincent
    et al.
    Institute of Applied Sciences, University of the South Pacific, Suva, Fiji.
    Aalbersberg, William
    Institute of Applied Sciences, University of the South Pacific, Suva, Fiji.
    Fiedler, Heidelore
    United Nations Environment Programme (UNEP) Chemicals Branch, Geneva, Switzerland.
    van Bavel, Bert
    Örebro University, School of Science and Technology.
    de Boer, Jacob
    Institute for Environmental Studies, Vrije University, Amsterdam, Netherlands.
    Capacity building for persistent organic pollutant (POP) analysis in the Pacific and POP trends in the Pacific Islands2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 173-177Article in journal (Refereed)
    Abstract [en]

    This article gives an overview of activities relating to the establishment of a regional center of excellence for testing persistent organic pollutants (POPs) in the Pacific Island Region. It highlights the areas of analytical procedures that needed improvement to perform trace-level POP testing in human-breast milk. It describes the actions taken by the POP expert group of the United Nations Environment Programme (UNEP) Chemicals during inspection visits and in setting up analytical procedures and proficiency tests to achieve acceptable levels of results for testing POPs regionally. It also describes results of early studies on POPs in human-breast milk in several Pacific Island countries, which generally show relatively low levels.

  • 7. Leslie, H. A.
    et al.
    van Bavel, Bert
    Örebro University, School of Science and Technology.
    Abad, E.
    de Boer, J.
    Towards comparable POPs data worldwide with global monitoring data and analytical capacity building in Africa, Central and Latin America, and the South Pacific2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 85-97Article in journal (Refereed)
    Abstract [en]

    The United Nations Environment Program (UNEP)/Global Environment Facility (GEF) created a capacity-building initiative to support the Global Monitoring Plan (GMP) for persistent organic pollutants (POPs), in which the collection of high-quality, comparable, POPs-monitoring data from all regions is critical for the identification of time trends and regional and global environmental transport. In a series of projects involving countries in West and East Africa, the Caribbean, Latin America and the South Pacific, the study design consisted of a combination of theoretical and hands-on training provided by a pool of three expert laboratories appointed by UNEP combined with POPs analysis in all areas by expert laboratories.

  • 8.
    Lundstedt, S.
    et al.
    Department of Chemistry, Umeå University, Umeå, Sweden.
    Bandowe, B. A. M.
    Geographic Institute, University of Bern, Bern, Switzerland.
    Wilcke, W.
    Geographic Institute, University of Berne, Berne, Switzerland.
    Boll, E.
    Department of Plant and Environmental Sciences, University of Copenhagen, Fredriksberg C, Denmark.
    Christensen, J. H.
    Department of Plant and Environmental Sciences, University of Copenhagen, Fredriksberg C, Denmark.
    Vila, J.
    Department of Microbiology, University of Barcelona, Barcelona, Spain.
    Grifoll, M.
    Department of Microbiology, University of Barcelona, Barcelona, Spain.
    Faure, P.
    Le Centre national de la recherche scientifique (CNRS), Université de Lorraine, Vandoeuvre les Nancy, France.
    Biache, C.
    Le Centre national de la recherche scientifique (CNRS), Université de Lorraine, Vandoeuvre les Nancy, France.
    Lorgeoux, C.
    Le Centre national de la recherche scientifique (CNRS), Université de Lorraine, Vandoeuvre les Nancy, France.
    Larsson, Maria
    Örebro University, School of Science and Technology.
    Irgum, K. Frech
    Department of Chemistry, Umeå University, Umeå, Sweden.
    Ivarsson, P.
    ALS Scandinavia, Stockholm, Sweden.
    Ricci, M.
    European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Geel, Belgium.
    First intercomparison study on the analysis of oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) and nitrogen heterocyclic polycyclic aromatic compounds (N-PACs) in contaminated soil2014In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 57, p. 83-92Article, review/survey (Refereed)
    Abstract [en]

    Oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) and nitrogen heterocyclic polycyclic aromatic compounds (N-PACs) are toxic, highly leachable and often abundant at sites that are also contaminated with PAHs. However, due to lack of regulations and standardized methods for their analysis, they are seldom included in monitoring and risk-assessment programs. This intercomparison study constitutes an important step in the harmonization of the analytical methods currently used, and may also be considered a first step towards the certification of reference materials for these compounds. The results showed that the participants were able to determine oxy-PAHs with accuracy similar to PAHs, with average determined mass fractions agreeing well with the known levels in a spiked soil and acceptable inter- and intra-laboratory precisions for all soils analyzed. For the N-PACs, the results were less satisfactory, and have to be improved by using analytical methods more specifically optimized for these compounds.

  • 9.
    Mullin, Lauren Gayle
    et al.
    Örebro University, School of Science and Technology. Waters Corporation, Milford MA, USA.
    Katz, David R.
    Atlantic Ecology Division, U.S. Environmental Protection Agency, Narragansett RI, USA.
    Riddell, Nicole
    Wellington Laboratories Inc., Guelph ON, Canada.
    Plumb, Robert
    Waters Corporation, Milford MA, USA.
    Burgess, Jennifer A.
    Scientialis Consulting LLC, Hopkinton MA, USA.
    Yeung, Leo W. Y.
    Örebro University, School of Science and Technology.
    Ericson Jogsten, Ingrid
    Örebro University, School of Science and Technology.
    Analysis of hexafluoropropylene oxide-dimer acid (HFPO-DA) by liquid chromatography-mass spectrometry (LC-MS): Review of current approaches and environmental levels2019In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 118, p. 828-839Article, review/survey (Refereed)
    Abstract [en]

    Emerging per- and polyfluorinated compounds (PFAS) compounds are of increasing interest for environmental monitoring, one being hexafluoropropylene oxide-dimer acid (HFPO-DA), commonly referred to as GenX. The following review describes existing liquid chromatography-mass spectrometry (LC-MS) methods used to analyse HFPO-DA, including sample preparation and method sensitivity relative to other PFAS. Analytical challenges are also described, in particular the significant formation of in-source fragmentation, dimer and dimer adducts which detract from [M-H](-) signal. Lastly, detected levels of HFPO-DA in environmental and biological samples are compared across the limited number of available field exposure studies, which found several mu g/L concentrations in water samples taken near fluorochemical plant discharges.

  • 10.
    Salihovic, Samira
    et al.
    Örebro University, School of Science and Technology.
    Nilsson, Helena
    Örebro University, School of Science and Technology.
    Hagberg, Jessika
    Örebro University, School of Science and Technology.
    Lindström, Gunilla
    Örebro University, School of Science and Technology.
    Trends in the analysis of persistent organic pollutants (POPs) in human blood2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 129-138Article in journal (Refereed)
    Abstract [en]

    The general demands on analytical practices in laboratories involved in monitoring concentrations of persistent organic pollutants (POPs) in human blood in the context of the Stockholm Convention are met by the validated analytical procedures applied in most laboratories today. At the same time, as the concentrations of many of the legacy POPs are decreasing in the general populations, more specific, sensitive, and accurate analytical techniques are required. Thus, a challenge for the Stockholm Convention is the analytical capacity, in terms of quality and availability worldwide, to monitor declining concentrations of POPs in human blood. However, other POP issues (e.g., those targeted by epidemiological studies) might require different information and therefore more specialized analytical procedures having greater instrumental sensitivity.

    We review current and emerging analytical procedures used for analysis of the chlorinated, brominated, and fluorinated classes of POPs in human blood with a focus on the compounds included in the Stockholm Convention. In general, analytical trends in sample clean-up, separation, detection techniques and quality protocols provide a tool for POP laboratories to measure POPs in human blood. Techniques based on established mass-selective instruments are most commonly employed but declining concentrations in humans in the future might require more selective, more sensitive techniques.

  • 11.
    Van Leeuwen, S. P. J.
    et al.
    RIKILT-Institute of Food Safety, Wageningen, Netherlands; Institute for Environmental Studies (IVM), Vrije University, Amsterdam, Netherlands.
    Van Bavel, Bert
    Örebro University, School of Science and Technology.
    Abad, E.
    Laboratory of Dioxins, Environmental Chemistry Department, IDÆA-CSIC, Barcelona, Spain.
    Leslie, H. A.
    Institute for Environmental Studies (IVM), Vrije University, Amsterdam, Netherlands.
    Fiedler, Heidelore
    Chemicals Branch, United Nations Environment Program, Châtelaine GE, Geneva, Switzerland.
    De Boer, J.
    Institute for Environmental Studies (IVM), Vrije Universiteit, Amsterdam, Netherlands.
    POPs analysis reveals issues in bringing laboratories in developing countries to a higher quality level2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 198-206Article in journal (Refereed)
    Abstract [en]

    We assessed the performance of laboratories in 18 developing countries in analyzing persistent organic pollutants (POPs) in environmental and human samples, as part of a capacity-building program with the goal of helping laboratories increase proficiency in the types of analyses required for the POPs Global Monitoring Program (GMP) under the Stockholm Convention. We identified several issues that need improvement before the laboratories can contribute to the GMP, including technical aspects of POPs analysis, QA/QC issues and laboratory-management problems.

  • 12. Van Leeuwen, S. P. J.
    et al.
    Van Bavel, Bert
    Örebro University, School of Science and Technology.
    De Boer, J.
    First worldwide UNEP interlaboratory study on persistent organic pollutants (POPs), with data on polychlorinated biphenyls and organochlorine pesticides2013In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 46, p. 110-117Article in journal (Refereed)
    Abstract [en]

    The first worldwide interlaboratory study on persistent organic pollutants (POPs) under the Stockholm Convention was organized, with a participation of 103 laboratories from Asia, Europe, the Americas, Africa and Australia, of which the majority submitted data on polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The participating laboratories were requested to analyze different matrices (i.e. two test solutions, and test materials for fish, sediment, fly ash and human milk). All results were statistically evaluated according to the procedures used in the European Union-based QUASIMEME proficiency-testing scheme.

1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf