| 1. |
- Aaltonen, T., et al.
(författare)
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Combination of Tevatron Searches for the Standard Model Higgs Boson in the W+W- Decay Mode
- 2010
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 104:6, s. 061802-
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Tidskriftsartikel (refereegranskat)abstract
- We combine searches by the CDF and D0 Collaborations for a Higgs boson decaying to W+W-. The data correspond to an integrated total luminosity of 4.8 (CDF) and 5.4 (D0) fb(-1) of p (p) over bar collisions at root s = 1.96 TeV at the Fermilab Tevatron collider. No excess is observed above background expectation, and resulting limits on Higgs boson production exclude a standard model Higgs boson in the mass range 162-166 GeV at the 95% C.L.
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| 2. |
- Dulio, Valeria, et al.
(författare)
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The NORMAN Association and the European Partnership for Chemicals Risk Assessment (PARC) : let’s cooperate!
- 2020
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Ingår i: Environmental Sciences Europe. - : Springer. - 2190-4707 .- 2190-4715. ; 32:1
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Tidskriftsartikel (refereegranskat)abstract
- The Partnership for Chemicals Risk Assessment (PARC) is currently under development as a joint research and innovation programme to strengthen the scientific basis for chemical risk assessment in the EU. The plan is to bring chemical risk assessors and managers together with scientists to accelerate method development and the production of necessary data and knowledge, and to facilitate the transition to next-generation evidence-based risk assessment, a non-toxic environment and the European Green Deal. The NORMAN Network is an independent, well-established and competent network of more than 80 organisations in the field of emerging substances and has enormous potential to contribute to the implementation of the PARC partnership. NORMAN stands ready to provide expert advice to PARC, drawing on its long experience in the development, harmonisation and testing of advanced tools in relation to chemicals of emerging concern and in support of a European Early Warning System to unravel the risks of contaminants of emerging concern (CECs) and close the gap between research and innovation and regulatory processes. In this commentary we highlight the tools developed by NORMAN that we consider most relevant to supporting the PARC initiative: (i) joint data space and cutting-edge research tools for risk assessment of contaminants of emerging concern; (ii) collaborative European framework to improve data quality and comparability; (iii) advanced data analysis tools for a European early warning system and (iv) support to national and European chemical risk assessment thanks to harnessing, combining and sharing evidence and expertise on CECs. By combining the extensive knowledge and experience of the NORMAN network with the financial and policy-related strengths of the PARC initiative, a large step towards the goal of a non-toxic environment can be taken.
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| 3. |
- Andersson, Jeanette, et al.
(författare)
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Results from the Swedish National Screening programme 2005. Sub report 1 Antibiotics, Anti-inflammatory substances and Hormones
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Measurements of pharmaceuticals were performed in 179 samples of water, sludge, manure, sediment and biota at background sites, municipal STPs, landfills, hospital effluents and recipient water from STPs. Bioassays of hormone activity were performed for a selected number of water samples. The NSAIDs were the most frequently detected pharmaceuticals and occurred in the highest concentrations. There were large differences in concentrations both between substances and between sampling sites. A regional trend in the STP effluent water could be observed for the NSAIDs and for some antibiotics with increased concentrations in samples originating from the north. No pattern could be seen for the hormones. Estrogenic effects were detected in STP outlets to the aquatic environment while values obtained for androgenicity were in most samples close to or below the detection limit. Based on the risk asessment (MEC/PNEC) risk quotients >1 was obtained for estradiol, estriol, ethinylestradiol and ibuprofen.
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| 4. |
- Brorström-Lundén, Eva, et al.
(författare)
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Measurements of Sucralose in the Swedish Screening Program 2007 : PART I; Sucralose in surface waters and STP samples
- 2008
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- IVL har på uppdrag av Naturvårdsverket genomfört en screening av sötningsmedlet sukralos. Sukralos är en disackarid, som modifierats i tre positioner med klor. Ämnet är ca 600 gånger sötare än sackaros och används efter tillstånd i USA och Europaunionen, m.fl. länder som tillsats i livsmedel. Ämnet är lättlösligt i vatten och vid intag utsöndras minst 95 % i oförändrad form. Ingen ackumulering i organismen är känd och nedbrytning eller omvandling har endast påvisats i vattenmiljö under inverkan av mikroorganismer. Tre primära klorinnehållande omvandlingspordukter har påvisats. De studier i djurförsök som legat till grund för tillståndsgivningen har visat mycket små effekter. Det huvudsakliga syftet med denna översiktliga kartläggning var att bestämma koncentrationer av sukralos i några olika matriser i miljön, framförallt för att belysa viktiga transportvägar i vattenmiljön i Sverige. Totalt bestämdes sukralos i 57 prover. Studien visar att; • Sucralose detekteras i vattenrecipienter i Sverige som tar emot utgående vatten ifrån reningsverk. • Inkommande vatten till svenska avloppsreningsverk (2 ARV) innehåller 3 500-7 900 ng sukralos/l. • Reningsgraden m a p. sukralos är låg i reningsverk, maximalt uppmättes 10 % reningsgrad i de parade prover som analyserats (inkommande/utgående). • Sukralos detekterades i alla de 29 utgående reningsverksvattenproverna ifrån 25 olika reningsverk i landet; 1 800-10 800 ng/l, median 4 900 ng/l. • Det sker ingen ackumulation av sukralos i slam. Denna rapport utgör den första delen av en fördjupad screening av sukralos i den svenska miljön. I en fortsättande, kommande rapport kommer resultat ifrån undersökningar av sukralosupptag i akvatiska biotaprover att redovisas.
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| 5. |
- Brorström-Lundén, Eva, et al.
(författare)
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Measurements of Sucralose in the Swedish Screening Program 2007 -PART I; Sucralose in surface waters and STP samples.
- 2008
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- IVL has performed a 'screening study' of sucralose on commission from the Swedish EPA. Sucralose is a chlorine containing derivative of sucrose, manufactured by selectively substituting three hydroxyls with chlorine. The substance is used as a sweetener in food products; on a weight basis it tastes ca. 600 times sweeter than the parent compound. The objectives of the study were to determine the concentrations of sucralose in media in the Swedish environment related to wastewater effluents and to highlight important transport pathways. In total 57 samples were analysed representing wastewater and sludge from sewage treatment plants as well as surface waters.
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| 6. |
- Brorström-Lundén, Eva, et al.
(författare)
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Measurements of Sucralose in the Swedish Screening program 2007. PART II; Sucralose in Biota samples and regional STP samples
- 2008
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- IVL has performed a 'screening study' of sucralose on commission from the Swedish EPA, reported in two consecutive parts. Sucralose is a chlorine containing derivative of sucrose, manufactured by selectively substituting three hydroxyls with chlorine. The substance is used as a sweetener in food products; on a weight basis it tastes ca. 600 times sweeter than the parent compound. The objectives of the study were to determine the concentrations of sucralose in media in the Swedish environment such as biota, wastewater effluents and to highlight important transport pathways. In total 84 samples were analysed. This report constitutes part 2 of the study.
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| 7. |
- Brorström-Lundén, Eva, et al.
(författare)
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Results from the Swedish National Screening Programme 2008. Screening of unintentionally produced organic contaminants
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This report considers the screening of unintentionally produced substances. Substance groups included in the screening program were oxygenated and nitrated forms of polycyclic aromatic hydrocarbons (PAHs) as well as nitrogen, sulphur and oxygen containing heterocyclic compounds. Polybrominated dibenzodioxins (PBDD) and furans (PBDF), polychlorinated dibenzothiophenes (PCDT) and dibenzotianthrenes (PCDTA) were also included in the study. PAHs and polychlorinated biphenyls (PCBs) were included as reference substances. The results of the screening showed that oxidized and nitrated forms of PAHs as well as heterocyclic analogues of PAHs were frequently found in background and urban areas and in most of the environmental matrices included in the study. PCDTs were found in most abiotic samples while PCDTA generally was below the limit-of-detection. The concentrations of PBDDs were generally below the limit-of-detection but were found in deposition, urban sediment, background sediment, and fish from Kvädöfjärden. The PBDF concentrations in air varied widely in time and space. OBDF occurred in similar concentrations as PCBs in air, deposition, sediment and soil.
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| 8. |
- Carlsson, Pernilla, et al.
(författare)
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Polychlorinated biphenyls (PCBs) as sentinels for the elucidation of Arctic environmental change processes : a comprehensive review combined with ArcRisk project results
- 2018
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Ingår i: Environmental Science and Pollution Research. - : Springer Science and Business Media LLC. - 0944-1344 .- 1614-7499. ; 25:23, s. 22499-22528
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Forskningsöversikt (refereegranskat)abstract
- Polychlorinated biphenyls (PCBs) can be used as chemical sentinels for the assessment of anthropogenic influences on Arctic environmental change. We present an overview of studies on PCBs in the Arctic and combine these with the findings from ArcRisk-a major European Union-funded project aimed at examining the effects of climate change on the transport of contaminants to and their behaviour of in the Arctic-to provide a case study on the behaviour and impact of PCBs over time in the Arctic. PCBs in the Arctic have shown declining trends in the environment over the last few decades. Atmospheric long-range transport from secondary and primary sources is the major input of PCBs to the Arctic region. Modelling of the atmospheric PCB composition and behaviour showed some increases in environmental concentrations in a warmer Arctic, but the general decline in PCB levels is still the most prominent feature. 'Within-Arctic' processing of PCBs will be affected by climate change-related processes such as changing wet deposition. These in turn will influence biological exposure and uptake of PCBs. The pan-Arctic rivers draining large Arctic/sub-Arctic catchments provide a significant source of PCBs to the Arctic Ocean, although changes in hydrology/sediment transport combined with a changing marine environment remain areas of uncertainty with regard to PCB fate. Indirect effects of climate change on human exposure, such as a changing diet will influence and possibly reduce PCB exposure for indigenous peoples. Body burdens of PCBs have declined since the 1980s and are predicted to decline further.
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| 9. |
- Hansen, Mona C., et al.
(författare)
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Sorption of perfluorinated compounds from contaminated water to activated carbon
- 2010
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Ingår i: Journal of Soils and Sediments. - : Springer Science and Business Media LLC. - 1439-0108 .- 1614-7480. ; 10:2, s. 179-185
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Tidskriftsartikel (refereegranskat)abstract
- Perfluorinated compounds (PFC) are toxic and bioaccumulative compounds that are ubiquitous in the environment. It is important to develop effective techniques to remove PFC from water. This study is the first to investigate sorption of PFC to activated carbon (AC) at environmentally relevant nanogram per liter concentrations. Batch AC sorption isotherms were measured for water from a contaminated groundwater well, for three perfluorosulfonates and five perfluoroacetic acids. For perfluorooctane sulfonate and perfluorooctanoic acid Freundlich sorption coefficients, log K (iF), for powdered activated carbon (PAC) were 4.0 and 3.8 (ng/g)(ng/L)(-n) , respectively, and for granular activated carbon (GAC) were 2.7 and 2.3 (ng/g)(ng/L)(-n) , respectively. Sorption was nonlinear, with Freundlich n coefficients generally around 0.5. The K (iF) on both GAC and PAC were PFC chain-length dependant, with increasing number of carbon yielding increasing K (iF). This chain-length dependence appeared stronger for perfluorosulfonates than for perfluoroacetic acids. Tests with short (10 min) adsorption times still yielded substantial PFC removal (20-40% for GAC, 60-90% for PAC) and revealed that AC is probably suitable for PFC removal in flow-through systems. A perfluorinated polymer, Teflon, was also tested as a PFC removal agent but proved not to be effective for PFC-contaminated water purification.
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| 10. |
- Kaj, Lennart, et al.
(författare)
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Screening 2004 - uppföljningsprojekt : Analys av oktaklorstyren, flyktiga metylsiloxaner, vissa fenoler och endosulfan
- 2007
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- • Oktaklorstyren samt penta- och hexaklorbensen har analyserats i strömming från 17 lokaler längs Norrlands- och Svealandskusten. Oktaklorstyren kunde påvisas i samtliga prov. Medianhalten var 7,4 ng/g fett i vårfångade prov och 1,6 ng/g fett i höstfångade prov. Halten är låg i förhållande till det gränsvärde för human konsumtion som finns i en av USAs delstater. • Flyktiga metylsiloxaner samt 4-nonylfenol, 4-t-oktylfenol, triclosan och bisfenol A har analyserats i in- och utgående vatten samt slam från Borlänge reningsverk. Transporterade mängder har beräknats. Av de analyserade ämnena var in- och utgående mängd störst för D5 (dekametylcyklopentasiloxan). Inkommande mängd D5 var 490 g/dygn, utgående 24 g/dygn med vatten och 49 g/dygn med rötslam. • Flyktiga metylsiloxaner har analyserats i förpackade livsmedel. Låga halter av cykliska siloxaner kunde påvisas i ett av tio prover. • Endosulfan har analyserats i luft- och depositionsprov från bakgrundsstationerna Råö och Pallas. Medelkoncentrationen i luft var högst under sommarhalvåret: 22 pg/m3 i Råö och 11 pg/m3 i Pallas. Deponerade mängder var också högst under sommarhalvåret: 1,0 ng/m2•dygn i Råö och 0,26 ng/m2•dygn i Pallas. • En översikt har gjorts över tidigare analyserade endosulfanhalter i svenska livsmedel. Antalet varor som innehöll halter av endosulfan över detektionsgränsen (0,01-0,04 mg/kg) har minskat under perioden 1995-2005 vilket speglar den minskade användningen i Europa. Efter år 2000 finns inga rapporter om endosulfan i svenskodlade grönsaker. Några gånger per år hittas importerad frukt och grönsaker med endosulfanhalter som vid stor konsumtion bedöms kunna ge barn akuta hälsoeffekter. Beräkningar av kroniskt intag visar att intaget i Sverige ligger på ca 1 % av "acceptabelt dagligt intag" dvs under risknivån för kroniska hälsoeffekter.
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