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  • 1.
    Ericson, Ingrid;,
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    van Bavel, Bert
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Lindström, Gunilla
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Screening av humanvävnad2008Report (Other academic)
    Abstract [sv]

    To expand our monitoring focus and to make complementary additions to the POPs traditionally measured we undertook a POP screening study of human tissue representative for Swedish adults in 2007. Among the compounds assessed in this study are several classes of organohalogen contaminants, such as polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and their brominated homologues (PBDD/Fs), polychlorinated biphenyls (PCBs) and their hydroxylated metabolites (OH-PCBs), polybrominated diphenyl ethers (PBDEs) and other bromine containing compounds, a number of organochlorine Stockholm Convention pesticides including toxaphene, and several recently identified perfluorinated chemicals (PFCs). The analytical techniques used were based on various GC and HPLC massspectrometry applications after clean-up and fractionation of blood and adipose tissue samples. The profile of the PCDD/F in 2007 is considered to be unchanged since the 90’s. The shift in congener profile from BDE #47, earlier being the dominant congener in human tissues, to BDE# 153 being dominant is confirmed in this study. Levels of PCBs are lower in this study group in relation to earlier fish consumers’ levels. Six individual PFCs were detected in the blood samples analysed. PFOS was detected at the highest concentration, with a geometric mean of 16 ng/ml, followed by PFOA, 2,4 ng/ml, PFHxS, PFNA, PFDA and PFUnDA were present at similar levels. There is a need to further investigate individual exposures to PFCs and identify high exposure groups. Brominated PBDFs were found in human adipose at concentrations of 0.27-2.24 pg/g, being the first results on a larger material of the general population in Sweden. The screening of a larger sample seize of human adipose tissue revealed several unknown, bromine containing POPs. Both smaller and larger bromine containing compounds besides the known BDEs were found. Positive identification of these compounds will require authentic standards and high resolution GC/MS analysis.

  • 2.
    Ericson Jogsten, Ingrid
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Yeung, Leo
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Analysis of ultra-short chain perfluoroalkyl substances in Swedish environmental waters2017Report (Other academic)
    Abstract [en]

    The purpose of this study was to investigate the environmental occurrence of ultra-short chain perfluoroalkyl substances (PFASs) in Swedish water samples. So far established protocols have focused on measuring PFASs with a carbon chain length of four or more carbons. In this study, perfluoroalkyl sulfonates of chain lengths of two, perfluoroethane sulfonate (PFEtS), and three, perfluoropropane sulfonate (PFPrS), carbons have been measured using a newly established instrumental method employing supercritical fluid separation (SFC) coupled to tandem mass spectrometry detection.

    A total of 26 samples were analysed, including ground water, surface water, rain water and snow. The sample locations included military and civilian airports, a former hard chromium plating facility, the vicinity of a hazardous waste management facility and background areas (lake surface water, rain and snow). Results show that both PFPrS and PFEtS could be detected in environmental samples using SFC separation coupled to triple quadrupole detection. Out of the 26 samples analysed, the ultra-short-chain PFPrS could be detected and quantified in 22 samples. The concentrations for PFPrS in all the samples ranged between 0.93 ng/l to 39 000 ng/l. The ultra-short-chain PFPEtS could be quantified in all of the 26 samples, with a concentration range between 0.07 and 5 700 ng/l. The highest concentrations represents highly contaminated ground water samples collected from a military airport. In the samples, PFPrS had a relative contribution to total PFAS concentration of 6 and 10 %, indicating the importance of measuring these compounds in environmental samples.

  • 3.
    Eriksson, Ulrika
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Haglund, Peter
    Executive, Universitet, Umeå universitet, UmU, Umeå universitet, teknisk- naturvetenskapliga fakulteten, kemiska institutionen.
    Kärrman, Anna
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Screening of PFASs in sludge and water from waste water treatment plants2017Report (Other academic)
    Abstract [en]

    The purpose of this study was to assess the contribution from precursor compounds to the total amount of selected PFASs in water and sludge from Swedish waste water treatment plants, as a supplemental to previous studies of two persistent PFAS-classes; perfluorocarboxylic acids (PFCAs) and perfluorosulfonic acids (PFSAs). Compound classes added in this study were fluorotelomer sulfonic acids (FTSAs), polyfluoroalkyl phosphoric acid esters (PAPs), perfluoroalkyl phosphonic and phosphinic acids (PFPAs, PFPiAs), perfluoralkane sulfonamides (FOSAs), and sulfonamido ethanols (FOSEs), and also the intermediates fluorotelomer unsaturated carboxylic acids (FTUCAs) and the stable transformation products fluorotelomer carboxylic acids (FTCAs). Three waste water treatment plants were included; Gässlösa (Borås), Henriksdal (Stockholm) and Umeå. PFAS levels in sludge from 2012. 2014, and 2015, and in filtered effluent and influent water from 2015 are reported. Precursor compounds were detected in sludge and influent water from all three WWTPs. Levels of precursor compounds in sludge samples exceeded those of persistent PFASs. Increasing PFCA levels in the effluent water compared to the influent water was observed, especially for the short-chained PFCAs. Occurrence of precursor compounds in influent water and sludge indicate degradation of precursor compounds to persistent PFASs.

  • 4.
    Hagberg, Jessika
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Lindström, Gunilla
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    van Bavel, Bert
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    “Screening av PBDD/F i humana matriser”2011Report (Other academic)
    Abstract [en]

    In a screening study during 2007-2008, also performed by MTM and commissioned by

    the Swedish EPA, the presence of polybrominated dibenzo-

    p furans (PBDFs) were

    detected in human adipose tissue from the Swedish population for the first time. In this

    study ten additional adipose samples were analysed for polybrominated dibenzo-

    p

    dioxins and furans, PBDD/Fs. In all samples, 2,3,7,8-TeBDF was present in levels

    ranging from 0.23 to 0.54 pg g

    -1 lipid and pentabrominated furans were present in nine

    out of ten samples. The levels of 2,3,7,8-TeBDF, 1,2,3,7,8- and 2,3,4,7,8-PeBDF were

    similar to those reported in the previous screening study [1].

    By lowering the detection limits by using larger injection volumes by employing the PTV

    injection technique, 2,3,7,8-TeBDD, 1,2,3,4,7,8-/1,2,3,6,7,8-HxBDD, 1,2,3,4,6,7,8-

    HpBDD, 1,2,3,4,7,8-HxBDF and 1,2,3,4,6,7,8-HpBDF were detected for the first time in

    human adipose tissue samples from Sweden. 2,3,7,8-TeBDD was detected in five out of

    ten samples in the range of 0.03-0.05 pg g

    -1 lipid. 2,3,7,8-TeBDD has been detected in

    samples with human origin earlier but not in samples from Sweden and levels of

    1,2,3,4,7,8-HxBDF has previously been detected in human milk samples from several

    countries, including Sweden. However, the detection of 1,2,3,4,7,8-/1,2,3,6,7,8-HxBDD,

    1,2,3,4,6,7,8-HpBDD and 1,2,3,4,6,7,8-HpBDF in human tissue is to our knowledge

    reported for the first time.

    To summarize, results from nineteen samples (the present and previous study)

    demonstrate the presence of brominated furans in the general Swedish population.

    Additionally, the individuals having the highest PBDD/F concentrations had also the

    highest levels of PCDD/Fs (pg TEQ g

    -1). This might support the general assumption that

    brominated and chlorinated dioxins have the same sources and exposure routes.

  • 5.
    Järnberg, Ulf
    et al.
    Executive, Universitet, Stockholms universitet, SU, Stockholms universitet, institutionen för tillämpad miljövetenskap, ITM.
    Holmström, Katrin
    Executive, Universitet, Stockholms universitet, SU, Stockholms universitet, institutionen för tillämpad miljövetenskap, ITM.
    van Bavel, Bert
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Kärrman, Anna
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Perfluoroalkylated acids and related compounds (PFAS) in the Swedish environment2007Report (Other academic)
    Abstract [sv]

    The perfluoroalkylated substances have gained increased attention among scientists and regulators during the last few years. In particular, perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA) and similar perfluorinated alkylated acids are regarded as the most stable end products of various perfluoroalkylated substances and have been shown to be extremely stable, bioconcentrate and biomagnify and have several toxicological effects. The industrial chemistry of perfluoroalkylated substances is extremely diverse and includes almost all chemical functionalities from simple pure alkanes to complex co-polymers. Major usage of perfluoroalkylated products is related to polymeric compounds and the dominant release to the environment is from primary and secondary production plants which are lacking in the Nordic countries. The occurrence of elevated concentrations of perfluoroalkylated acids in Sweden is strongly related to urbanized areas and the most likely path into the aquatic environment is through sewage water, although atmospheric input is also possible via more volatile precursor compounds. Up to 40 times elevated concentrations were found in biota from urban areas compared to unpolluted areas. Lake Mälaren and lower parts of the river Helge å are examples of aqueous environments clearly contaminated by PFOS. One of several potential point sources in Sweden has been screened for PFOS. A firefighting training site was found to release PFOS to the local aqueous environment (wetland) where μg/l concentrations where found. Long chain (more than 8 C for sulfonates and 10 C or more for carboxylates) perfluoroalkylated acids are readily taken up by biota in aqueous environments and reach very high concentrations in predators at high trophic levels of aquatic food webs. Baltic guillemot egg showed an increasing trend in PFOS concentration from 20-30 ng/g by the end of sixties to more than 600 ng/g at present. Freshwater otter from various locations in Sweden showed concentrations similar to guillemot eggs and Baltic grey seal has extreme values up to ten times higher (21 μg/g sum of all acids 6-14 C, PFOS alone:11μg/g). Human exposure, as described by Swedish human blood levels, appears to be similar to most other countries. No extreme values were encountered which would indicate occupational exposure. An excessive consumption of freshwater fish may contribute to an increased exposure, but this could not be clearly verified. Occupational settings where exposure to precursor compounds can take place are present in Sweden and should be included in future studies. Industrial use of textile and leather impregnating formulations result in elevated concentrations of perfluorocarboylates in effluent water from sewage treatment plants. The relation between effluent and biota concentrations for an aquatic environment with this type of activity needs to be further described in particular for perfluoroalkyl carboxylates which are currently being discharged in Sweden. Exposure routes and distribution behavior are yet not completely described for many PFAS, in particular their precursors. Environmental levels, human levels and human exposure data are lacking for a wide variety of PFAS discussed in this report

  • 6.
    Karlsson, Therese
    et al.
    Executive, Universitet, Göteborgs universitet, Göteborgs universitet, Sven Lovén centrum för marina vetenskaper.
    Kärrman, Anna
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Rotander, Anna
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Hassellöv, Martin
    Executive, Universitet, Göteborgs universitet, Göteborgs universitet, Sven Lovén centrum för marina vetenskaper.
    Provtagningsmetoder för mikroplast >300 μm i ytvatten: En jämförelsestudie mellan pump och trål2018Report (Other academic)
    Abstract [en]

    Sampling and analyzing microplastics (MPs) comes with a unique set of challenges and currently a wide variety of methods are developed and applied. In order to facilitate future environmental monitoring we compared two methods that are often used for sampling MPs >300 μm; a manta trawl and a filtering pump. Six replicates per method were taken during calm weather conditions in the same location on the same day. The volume per replicate was 20 m3 for the pump and approximately 60 m3 for the trawl. Following analysis was done with visual sorting in a stereo microscope. The same person analyzed all samples and the anthropogenic particles were divided into eleven classification categories.

    In the pump samples zero to eight MPs were found per sample, rendering an arithmetic mean of 0.17 MPs/m3. In the trawl samples the numbers varied between 9 and 33 MPs, which corresponded to a significantly higher concentration per volume than the pump with an arithmetic mean of 0.32 MPs/m3. The results also indicated that in order to reach a statistical power of 60%, ten pump replicates would be needed to measure a difference between the examined area and an uncontaminated area. For the trawl a corresponding number of two replicates would be required. Alternatively a higher sample volume can be applied, which would render a higher certainty as the distribution data would approach a Gaussian distribution. A higher sampling volume would also lower the measurement uncertainty as it would decrease fluctuations in the counting statistics. Variations in measurement uncertainty between the methods was hypothesized to be primarily related to the differences in sample volume and could also be compensated through increasing the volume sampled, which would be somewhat faster than increasing the amount of replicates.

    The composition of MPs in the study varied between the replicates but mainly consisted of expanded cellular plastics, films, filaments and fragments. Each pump sample had on average 1.3 films and 0.33 expanded cellular plastics whereas each trawl sample had on average 2.5 films and 9.2 expanded cellular plastics. Per unit of volume the majority of the particles in the pump samples (40%) consisted of films, whereas the particles in the trawl predominantly consisted of expanded cellular plastics (46%). Expanded cellular plastics therefore seem to be sampled more efficiently by trawls, which could be because they float on top of the surface, the pump samples a bit lower in the surface water and the results in this study show that the sample compositions were more comparable for particles with more neutral buoyancy. Not enough particles were however obtained to allow for a more in-depth analysis of the compositional differences.

    The probability of false null-values increase with a lower true value of numbers of particles per sample and this starts to have a significantly negative effect below five particles per sample. Regardless of which method that is used it is therefore crucial to sample a sufficient number of particles (volume times concentration) suitable for comparing spatial, temporal or compositional differences.

    Background and purpose of the report

    Even if methods for sampling, extraction and identification of microplastics have developed rapidly during recent years several challenges remain. One of the challenges that remain is how to sample a group of contaminants that is as heterogeneous, both concerning shape and distribution, as microplastics. Additionally it is important to know to what extent results from different types of sampling devices can be compared. Here we compare two methods that are often used to sample microplastics above 300 μm in surface waters; a manta trawl and a pump. During one day (10th of October 2017) six replicates per sampling method was taken in the same spot in Gullmarsfjorden outside Lysekil. Through counting microplastics and other types of microlitter in the samples the aim was to compare differences between replicates and methods.

    This study was commissioned by the Swedish Environmental Protection Agency and the Swedish Agency for Marine and Water Management, as a step in the work to develop monitoring of microlitter.

  • 7.
    Kärrman, Anna
    et al.
    Executive, Universitet, Örebro universitet.
    Davies, Jenna
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Salihovic, Samira
    Executive, Universitet, Örebro universitet.
    Lignell, Sanna
    Executive, Myndigheter, Livsmedelsverket, SLV.
    Aune, Marie
    Executive, Myndigheter, Livsmedelsverket, SLV.
    PFAAs in matched milk and serum from primipara women2013Report (Other academic)
    Abstract [en]

    The aim of the study was to assess the association between serum and milk levels of perfluoroalkyl acids (PFAAs) in humans. Individual milk and serum samples from fifty (50) primipara women in Uppsala, Sweden, were collected in 2004, 2007, 2009, and 2011. PFAAs were analysed in milk and serum using in-house validated methods and quality control protocols. PFOS, PFOA and PFHxS were detected in 98-100% of the milk and serum samples in the concentration order PFOS>PFHxS>PFOA. PFBuS, PFHpA, and PFDA were detected in 12-64% of the milk and serum samples. PFNA and PFUnDA were detected at high frequency but low levels in serum and were consequently less frequently detected in milk. PFOS and PFHxS showed a stronger correlation between serum and milk levels compared to PFOA. The regression slope with 95% confidence interval was calculated to assess the association between serum and milk levels. The level of PFOS in milk is 1.4 ± 0.25% of the corresponding maternal serum level. For PFHxS the interval is 1.4 ± 0.33% and for PFOA 2.6 ± 1.1%. The temporal trends (2004-2011) observed are similar in serum and milk.

  • 8.
    Kärrman, Anna
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Ericson, Ingrid
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    van Bavel, Bert
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Lindström, Gunilla
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Analysis and Occurrence of Perfluorinated Chemicals in Breast Milk and Serum from Swedish Women, 1996-20052006Report (Other academic)
    Abstract [en]

    Breast milk samples and blood serum collected from primipara women in Sweden during the period 1996 to 2004 were analyzed with the aim to study levels of perfluorinated chemicals (PFCs) and the concentration ratio between milk and blood. A total of five perfluorinated chemicals (PFCs) were detected in breast milk, of which perfluorooctanesulfonate (PFOS) and perfluorohexanesulfonate (PFHxS) were found most frequently. In addition, perfluorooctanesulfonamide (PFOSA), perfluorononanoic acid (PFNA) and perfluorooctanoic acid (PFOA) were detected. The highest mean concentration in individual milk samples was obtained for PFOS (0.172 ng/mL) followed by PFHxS (0.068 ng/mL) and PFOSA (0.012 ng/mL). The quantification of PFOA was hampered in most of the samples due to a high procedural blank contamination. A total of eight PFCs were detected in the serum samples. Breast milk levels in this study were on average 113 times lower compared to serum levels for PFOS, 57 times lower for PFHxS and 23 times lower for PFOSA. There was a strong association between increasing serum concentration and increasing milk concentration for PFOS and PFHxS. During the period 1996-2004, the levels in pooled breast milk samples were relatively constant with a slightly decreasing trend for the pools collected in years 2003-2004. Analysis of breast milk, consecutive sampled over a period of several days, did not indicate a decrease in levels with progression of lactation.

  • 9.
    Kärrman, Anna
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Ericson, Ingrid
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    van Bavel, Bert
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Lindström, Gunilla
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    “Mätningar av PFOS i bröstmjölk och blod”2006Report (Other academic)
    Abstract [en]

    Breast milk samples and blood serum collected from primipara women in Sweden during the

    period 1996 to 2004 were analyzed with the aim to study levels of perfluorinated chemicals

    (PFCs) and the concentration ratio between milk and blood.

    A total of five perfluorinated chemicals (PFCs) were detected in breast milk, of which

    perfluorooctanesulfonate (PFOS) and perfluorohexanesulfonate (PFHxS) were found most

    frequently. In addition, perfluorooctanesulfonamide (PFOSA), perfluorononanoic acid

    (PFNA) and perfluorooctanoic acid (PFOA) were detected. The highest mean concentration in

    individual milk samples was obtained for PFOS (0.172 ng/mL) followed by PFHxS (0.068

    ng/mL) and PFOSA (0.012 ng/mL). The quantification of PFOA was hampered in most of the

    samples due to a high procedural blank contamination. A total of eight PFCs were detected in

    the serum samples.

    Breast milk levels in this study were on average 113 times lower compared to serum levels for

    PFOS, 57 times lower for PFHxS and 23 times lower for PFOSA. There was a strong

    association between increasing serum concentration and increasing milk concentration for

    PFOS and PFHxS.

    During the period 1996-2004, the levels in pooled breast milk samples were relatively

    constant with a slightly decreasing trend for the pools collected in years 2003-2004.

    Analysis of breast milk, consecutive sampled over a period of several days, did not indicate a

    decrease in levels with progression of lactation.

  • 10.
    Yeung, Leo
    et al.
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Eriksson, Ulrika
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Kärrman, Anna
    Executive, Universitet, Örebro universitet, Örebro universitet, forskningscentrum människa teknik miljö, MTM.
    Pilotstudie avseende oidentifierade poly- och perfluorerade alkylämnen i slam och avloppsvatten från reningsverk i Sverige2016Report (Other academic)
    Abstract [en]

    The aim of the this investigation are 1) to measure the amount and proportion of unidentified PFASs had been used in daily life by analyzing total organofluorine (TOF) and quantifiable PFASs in influent samples; and 2) to measure the amount and proportion of unidentified PFASs released into the environment by analyzing TOF and quantifiable PFASs in effluent samples and sludge samples from municipal waste water treatment plants. Sewage (influent and effluent) and sludge were collected in 2015 and 2016 from three wastewater treatment plants (Gässlösa (Borås), Henriksdal (Stockholm) and Öhn (Umeå)). Levels of TOF and PFAS in sludge from 2016 and filtered effluent and influent samples from 2015 and 2016 are reported. Different classes of PFASs including PFCAs, PFSAs, FTSAs, FTCAs, diPAPs, FTUCAs, FOSAs, FOSAAs, PFPAs and PFPiAs were detected in sewage and sludge samples. For influent and effluent samples, all detectable neutral and/or cationic PFASs remained unidentified; for the anionic fraction, 79-94% of the TOF were unidentified. For sludge samples, a significant proportion (42-82%) of total anionic organofluorine remained unidentified

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