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Dubocq, F., Wang, T., Yeung, L. W. Y., Sjöberg, V. & Kärrman, A. (2019). Characterization of the Chemical Contents of Fluorinated and Fluorine-Free Firefighting Foams Using a Novel Workflow Combining Nontarget Screening and Total Fluorine Analysis. Environmental Science and Technology
Åpne denne publikasjonen i ny fane eller vindu >>Characterization of the Chemical Contents of Fluorinated and Fluorine-Free Firefighting Foams Using a Novel Workflow Combining Nontarget Screening and Total Fluorine Analysis
Vise andre…
2019 (engelsk)Inngår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851Artikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
Abstract [en]

Aqueous film-forming foams (AFFFs) are widely used to extinguish liquid fires due to their film-forming properties. AFFF formulation historically contains per- and polyfluoroalkyl substances (PFASs) that can be very persistent and pose a health risk to biota and humans. Detailed analysis of the chemical composition of AFFFs can provide a better understanding on the potential environmental impact of the ingredients. In this study, a novel workflow combining target analysis, nontarget screening analysis (NTA), total fluorine (TF) analysis, and inorganic fluoride (IF) analysis was applied to disclose the chemical composition of 24 foams intended for liquid fires. Foams marketed as containing PFASs as well as fluorine-free foams were included. By comparing the sum of targeted PFASs and total organofluorine concentrations, a mass balance of known and unknown organofluorine could be calculated. Known organofluorine accounted for <1% in most fluorine-containing AFFFs, and it was confirmed that the foams marketed as fluorine-free did not contain measurable amounts of organofluorine substances. Five fluorinated substances were tentatively identified, and non-fluorinated zwitterionic betaine compounds, which are considered to be replacement substances for PFASs, were tentatively identified in the organofluorine-free foams.

sted, utgiver, år, opplag, sider
ACS Publications, 2019
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-78825 (URN)10.1021/acs.est.9b05440 (DOI)31789512 (PubMedID)
Tilgjengelig fra: 2019-12-20 Laget: 2019-12-20 Sist oppdatert: 2019-12-20bibliografisk kontrollert
Rai, N., Sjöberg, V., Forsberg, G., Karlsson, S., Olsson, P.-E. & Jass, J. (2019). Metal contaminated soil leachates from an art glass factory elicit stress response, alter fatty acid metabolism and reduce lifespan in Caenorhabditis elegans. Science of the Total Environment, 651, 2218-2227
Åpne denne publikasjonen i ny fane eller vindu >>Metal contaminated soil leachates from an art glass factory elicit stress response, alter fatty acid metabolism and reduce lifespan in Caenorhabditis elegans
Vise andre…
2019 (engelsk)Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 651, s. 2218-2227Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The present study evaluated the toxicity of metal contamination in soils from an art glass factory in Smaland Sweden using a Caenorhabditis elegans nematode model. The aim of the study was to chemically analyze the soil samples and study the biological effects of water-soluble leachates on the nematodes using different physiological endpoints. The total metal content showed that As, Cd and Pb were at levels above the guideline values for soils in areas around the factory. Less than 10% of the total metal content in the soil was found in the water-soluble leachates, however, Al, As, Fe and Pb remained higher than the guideline values for safe drinking water. Exposure of C. elegans to the water-soluble leachates, at both post-hatching larvae stage (L1-young adult) for 48 h and at the young adult stage (L4) for 6 h, showed significant gene alteration. Although the nematodes did not exhibit acute lethality, lifespan was significantly reduced upon exposure. C. elegans also showed altered gene expression associated with stress response and fat metabolism, as well as enhanced accumulation of body fat. The study highlighted the significance of assessing environmental samples using a combination of gene expression analysis, fatty acid metabolism and lifespan for providing valuable insight into the negative impact of metals. The altered fat metabolism and reduced lifespan on exposure to soil leachates motivates further studies to explore the mechanism of the toxicity associated with the metals present in the environment.

sted, utgiver, år, opplag, sider
Elsevier, 2019
Emneord
Contaminated soil, Water-soluble leachates, Ecotoxicology, Lipid metabolism, Heavy metals, Glass manufacturing
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-70482 (URN)10.1016/j.scitotenv.2018.10.067 (DOI)000450551600055 ()30326454 (PubMedID)2-s2.0-85054622934 (Scopus ID)
Forskningsfinansiär
Knowledge Foundation, 20150084
Tilgjengelig fra: 2018-12-05 Laget: 2018-12-05 Sist oppdatert: 2018-12-05bibliografisk kontrollert
Zeiner, M. & Sjöberg, V. (2019). Mountain pine needles as a bio-monitor of potentially toxic elements in higher elevations. In: Books of Abstracts: . Paper presented at 18th Austrian Chemistry Days, Linz, Austria, September 24-27.
Åpne denne publikasjonen i ny fane eller vindu >>Mountain pine needles as a bio-monitor of potentially toxic elements in higher elevations
2019 (engelsk)Inngår i: Books of Abstracts, 2019Konferansepaper, Poster (with or without abstract) (Fagfellevurdert)
Abstract [en]

Pine needles are considered useful bio-monitors. Their waxy surface allows them to accumulate various air pollutants. Furthermore, long-term studies are possible, since the needles can reach an age of up to ten years. Mountain pines (Pinus mugo), locally called Latschen, grow amongst others in the Alps in a height of approx. 1000 m to 2200 m. Thus, they seem appropriate specimens to monitor air pollution by potentially toxic elements in higher elevations.

Needle samples were collected on the northern slopes in the Lower Inn Valley (Tirol, Austria). Different sampling sites were selected between Münster and Innsbruck, the altitude ranging from 1200 m to 2000 m. From each sample tree fresh needles, one-year-old and two and more year old needles were taken. The elemental contents in all samples were determined using inductively coupled plasma mass spectrometry after microwave assisted acid digestion.

Compared to results for pines needles from lower altitudes, differences were mainly found in the contents of essential macro elements, but less regarding potentially toxic elements, such as Cd, Cu, Cr, Ni, Pb.

HSV kategori
Forskningsprogram
Miljökemi
Identifikatorer
urn:nbn:se:oru:diva-77004 (URN)978-3-900554-78-1 (ISBN)
Konferanse
18th Austrian Chemistry Days, Linz, Austria, September 24-27
Tilgjengelig fra: 2019-10-03 Laget: 2019-10-03 Sist oppdatert: 2019-10-07bibliografisk kontrollert
Åhlgren, K., Sjöberg, V. & Bäckström, M. (2018). Leaching of U, V, Ni and Mo from Alum Shale Waste as a Function of Redox and pH - Suggestion for a Leaching method. In: Wolkersdorfer, Ch., Sartz, L., Weber, A., Burgess, J. and Tremblay, G. (Ed.), Mine Water: Risk to Opportunity. Paper presented at 11th ICARD, IMWA, WISA MWD 2018 Conference – Risk to Opportunity, Pretoria, South Africa, 10-14 September, 2018 (pp. 782-787). Pretoria, South Africa: Tshwane University of Technology, II
Åpne denne publikasjonen i ny fane eller vindu >>Leaching of U, V, Ni and Mo from Alum Shale Waste as a Function of Redox and pH - Suggestion for a Leaching method
2018 (engelsk)Inngår i: Mine Water: Risk to Opportunity / [ed] Wolkersdorfer, Ch., Sartz, L., Weber, A., Burgess, J. and Tremblay, G., Pretoria, South Africa: Tshwane University of Technology , 2018, Vol. II, s. 782-787Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Alum shale residues in the form of nes and ash were leached at di erent pH and redox conditions. Total concentrations and mineral analysis indicate loss of some elements in burned shale, and redistribution of others. Uranium and nickel were shown to be more leachable from nes than from ashes. Decreased pH favoured leaching of Ni, U and V, whereas increased pH resulted in increased leaching of molybdenum. Redox conditions a ected leaching of Mo and V, but not U and Ni. us the method can be used as an estimate for leaching at di erent redox and pH conditions.

sted, utgiver, år, opplag, sider
Pretoria, South Africa: Tshwane University of Technology, 2018
Emneord
Kvarntorp, alum shale, leaching, uranium, vanadium
HSV kategori
Forskningsprogram
Kemi
Identifikatorer
urn:nbn:se:oru:diva-71961 (URN)978-0-620-80650-3 (ISBN)
Konferanse
11th ICARD, IMWA, WISA MWD 2018 Conference – Risk to Opportunity, Pretoria, South Africa, 10-14 September, 2018
Tilgjengelig fra: 2019-01-30 Laget: 2019-01-30 Sist oppdatert: 2019-03-26bibliografisk kontrollert
Sjöberg, V. & Karlsson, S. (2017). LC-MP AES as a screening tool for metal-DOC interactions in ARD. In: Bio-geo interactions: basic knowledge to application: 16th Symposium on remediation in Jena “Jenaer Sanierungskolloquium”. Conference proceedings. Paper presented at 16th Symposium on remediation, Jena, Germany, October 5-6, 2017 (pp. 43-43).
Åpne denne publikasjonen i ny fane eller vindu >>LC-MP AES as a screening tool for metal-DOC interactions in ARD
2017 (engelsk)Inngår i: Bio-geo interactions: basic knowledge to application: 16th Symposium on remediation in Jena “Jenaer Sanierungskolloquium”. Conference proceedings, 2017, s. 43-43Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

Dissolved organic carbon (DOC) such as humic and fulvic acids have a high ability to form stable complexes with many metal ions. Also otherwise insoluble elements may be mobilized by complexolysis. Detection of the humic substances can be made with size exclusion chromatography (SEC) with UV/Vis and fluorescence detection. To detect the metals that different organic compounds carry the metal content in the eluent can be analyzed. However, the phosphate buffer that is used in the reference method is not well suited since phosphate and hydrogen phosphate ions are excellent complexing agents for many metals. In this work ammonium nitrate buffer was evaluated and used.

To decrease the analytical cost and streamline the analytical procedure an LC-system (Agilent 1260) was connected to an MP AES (Agilent 4200). After separation and spectroscopic measurements the eluent was lead to the nebulizer and the metal content in the eluent was determined as a function of time.

When acidic shale residues come in contact with wood chips, acidic hydrolysis and microbial degradation generate a complex mixture of hydrophilic organic compounds and acid rock drainage (ARD). If no subsequent condensation occurs the released organics would mainly contain low molecular weight carbon compounds (LMWOC). The fluorescence at 443 nm after exitation at 345 nm reveals that compounds of humic and fulvic character are present in the leachates. The content of manganese in the more complex forms of organic compounds is limited and it is mainly associated with LMWOC. Hence, humic compounds are not a good carrier of manganese in this type of system.

By using ammonium nitrate as buffer solution the separation was almost identical to the phosphate buffer. The results show that LC and MP AES can be used for analysis of the metal content as a function of size of organic carriers, such as humic substances and LMWOC. By using MP AES for metal analysis, operating cost is significantly decreased compared to hitherto used methods based on ICP. The results also indicate that substances with humic character form during acidic and microbial degradation of wood. From an environmental perspective this is of importance since several organic compounds facilitate metal mobilization.

HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-64736 (URN)
Konferanse
16th Symposium on remediation, Jena, Germany, October 5-6, 2017
Tilgjengelig fra: 2018-01-31 Laget: 2018-01-31 Sist oppdatert: 2018-02-02bibliografisk kontrollert
Karlsson, S., Sjöberg, V. & Allard, B. (2017). Metal transport dynamics in a small watershed - Dylta bruk, Sweden. In: Bio-geo interactions: basic knowledge to application: 16th Symposium on remediation in Jena “Jenaer Sanierungskolloquium”. Conference proceedings. Paper presented at 16th Symposium on remediation, Jena, Germany, October 5-6, 2017 (pp. 23-23).
Åpne denne publikasjonen i ny fane eller vindu >>Metal transport dynamics in a small watershed - Dylta bruk, Sweden
2017 (engelsk)Inngår i: Bio-geo interactions: basic knowledge to application: 16th Symposium on remediation in Jena “Jenaer Sanierungskolloquium”. Conference proceedings, 2017, s. 23-23Konferansepaper, Oral presentation with published abstract (Annet vitenskapelig)
Abstract [en]

Metal transport in small streams in boreal catchments is a function of weathering rate, water balance and redistribution mechanisms. Because of these highly dynamic processes long term water quality changes are difficult to determine but needed in order to assess the impact of several local and largescale changes on local water quality.

The field site is situated at Dyltabruk, some 20 km North of Örebro in South Central Sweden. The 4 km2 catchment has deciduous and coniferous species on a granitic moraine with some 20% ofmires and fens adjacent to the oldest sulphur mine in Sweden. Grab samples were collected weekly since 2006 but more frequent during periods with large changes in water balance. The samples were analysed for general hydrochemical parameters (temperature, electrical conductivity, pH, dissolved organic carbon (DOC), inorganic carbon (IC), fulvic and humic acids and dissolved oxygen), dissolved principal anions, principal and trace metals. Standardized analytical procedures were applied. Temperature, precipitation and other climatic parameters were recorded some 2 km from thesite every 15 minutes.

The results showed a general concentration pattern where the water balance had the largest single influence. The concentrations had a seasonality inversely related to the ground water level. Inter annual variations of one to two orders of magnitude were observed for group 1 and 2 elements. For transition metals with high affinity to solid matter as well as DOC the variation reached three to four orders of magnitude. Only aluminium and iron had concentrations that occasionally exceeded solubility limits which resulted in a similar inter annual variation.

During the study period the average annual temperature and precipitation were no different (p 0.05) from the previous ten years but rainfall intensities increased. In a long term perspective the concentrations for all metals except calcium had positive trends. The tendencies remained when normalizing against chloride. The same was found for DOC, nitrate and sulphate. Hence, there is an accelerating loss of most elements that is not limited by weathering. It is uncertain, however, if the positive trends for DOC depend on increased production or a balancing release from the supply in mires and fens. In addition, there is also an indication of increasing inter annual concentration changescwith time. Although not exclusively proven such phenome would occur as a result of increased rainfall intensity. It is therefore likely that the accelerating loss of elements is a result of increased weathering rather than increasing water discharge.

HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-64734 (URN)
Konferanse
16th Symposium on remediation, Jena, Germany, October 5-6, 2017
Tilgjengelig fra: 2018-01-31 Laget: 2018-01-31 Sist oppdatert: 2018-02-02bibliografisk kontrollert
Gärdek, O. & Sjöberg, V. (2017). Retention of metals by optimized steel slag. In: Bio-geo interactions: basic knowledge to application: 16th Symposium on remediation in Jena “Jenaer Sanierungskolloquium”. Conference proceedings. Paper presented at 16th Symposium on remediation, Jena, Germany, October 5-6, 2017 (pp. 24-24).
Åpne denne publikasjonen i ny fane eller vindu >>Retention of metals by optimized steel slag
2017 (engelsk)Inngår i: Bio-geo interactions: basic knowledge to application: 16th Symposium on remediation in Jena “Jenaer Sanierungskolloquium”. Conference proceedings, 2017, s. 24-24Konferansepaper, Oral presentation with published abstract (Annet vitenskapelig)
Abstract [en]

Silicon reduced Argon Oxygen Decarburization slag (Si-AOD) is a common by-product from manufacturing of stainless steel. In this work the possibility to use the slag as adsorbent for some selected metals (Cr, Ni, Cu, Zn and Pb) is tested. The slag was obtained from Outokumpu, Avesta, Sweden as one black, powder like, and one greenish, pumice-stone like. Due to its small grain size the black Si-AOD was not suitable as a filter material since it quickly clogged and formed almost impermeable layers. However, the greenish Si-AOD with its porous structure showed good permeability and seems to be good as a filter material. Its ability to remove the selected elements from an aqueous solution was tested at different metal concentrations, ionic strengths and pH. The absorption capacity was tested in columns each holding 30 gram of the greenish Si-AOD and 300 mL of the aqueous phase was passed through the material. Six fractions of 50 mL each were collected and analyzed with respect to pH and metal content to estimate the retention capacity. With an initial concentration of 10 mg/L (Ni, Cu and Zn) and 1 mg/L (Cr and Pb) an almost 100% adsorption was obtained. The adsorption seemed to follow the Freundlich adsorption isotherm and with a 1/n-value of 0.13 the adsorption process is probably chemical. The adsorption capacity of the surface was estimated to be at least 80 μeqv/g. Hence a liquid to solid ratio of up to 100 can be reached with the used metal solution before the retention capacity of the slag is depleted

HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-64735 (URN)
Konferanse
16th Symposium on remediation, Jena, Germany, October 5-6, 2017
Tilgjengelig fra: 2018-01-31 Laget: 2018-01-31 Sist oppdatert: 2018-02-02bibliografisk kontrollert
Åhlgren, K., Sjöberg, V., Sartz, L. & Bäckström, M. (2017). Understanding Groundwater composition at Kvarntorp, Sweden, from leaching tests and multivariate statistics. In: Wolkersdorfer, C.; Sartz, L.; Sillanpää, M.; Häkkinen, A. (Ed.), 13th International Mine Water Association Congress – Mine Water & Circular Economy: Proceedings, Volume 2. Paper presented at 13th International Mine Water Association Congress – "Mine Water & Circular Economy – A Green Congress" (IMWA 2017), Rauha, Lappeenranta, Finland, June 25-30, 2017 (pp. 770-776). International Mine Water Association
Åpne denne publikasjonen i ny fane eller vindu >>Understanding Groundwater composition at Kvarntorp, Sweden, from leaching tests and multivariate statistics
2017 (engelsk)Inngår i: 13th International Mine Water Association Congress – Mine Water & Circular Economy: Proceedings, Volume 2 / [ed] Wolkersdorfer, C.; Sartz, L.; Sillanpää, M.; Häkkinen, A., International Mine Water Association , 2017, s. 770-776Konferansepaper, Oral presentation with published abstract (Annet vitenskapelig)
Abstract [en]

Due to oil production from alum shale, the Kvarntorp area is heavily polluted. A waste deposit consisting mostly of shale ash and fines is of important concern. Groundwater shows that parameters such as pH, U, V, Ni and Mo are different at different localities around the deposit. Leaching tests indicate that burned and unburned shale residues leave different signatures on leachates. Principal component analysis of groundwater and leaching tests suggest that ground-water is affected by the waste deposit and that it is more influenced by shale ash than by fines.

sted, utgiver, år, opplag, sider
International Mine Water Association, 2017
Serie
Tutkimusraportit – Research Reports, ISSN 2243-3376 ; 3
Emneord
Alum shale, Kvarntorp, Shale oil, Leaching, Uranium
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-64732 (URN)978-952-335-065-6 (ISBN)978-952-335-066-3 (ISBN)
Konferanse
13th International Mine Water Association Congress – "Mine Water & Circular Economy – A Green Congress" (IMWA 2017), Rauha, Lappeenranta, Finland, June 25-30, 2017
Tilgjengelig fra: 2018-01-31 Laget: 2018-01-31 Sist oppdatert: 2019-03-26bibliografisk kontrollert
Åhlgren, K., Sjöberg, V., Sartz, L. & Bäckström, M. (2017). Understanding Groundwater Composition at Kvarntorp, Sweden, from Leaching Tests and Multivariate Statistics. In: Wolkersdorfer, C., Sartz, L., Sillanpää, M. and Häkkinen, A (Ed.), Mine Water & Circular Economy: . Paper presented at IMWA 2017, Mine Water & Circular Economy, 13th International Mine Water Association Congress, Lappeenranta, Finland, 25-30 June, 2017 (pp. 770-776). Lappeenranta, Finland: Lappeenranta University of Technology, II
Åpne denne publikasjonen i ny fane eller vindu >>Understanding Groundwater Composition at Kvarntorp, Sweden, from Leaching Tests and Multivariate Statistics
2017 (engelsk)Inngår i: Mine Water & Circular Economy / [ed] Wolkersdorfer, C., Sartz, L., Sillanpää, M. and Häkkinen, A, Lappeenranta, Finland: Lappeenranta University of Technology , 2017, Vol. II, s. 770-776Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Due to oil production from alum shale, the Kvarntorp area is heavily polluted. A waste deposit consisting mostly of shale ash and fines is of important concern. Groundwater shows that parameters such as pH, U, V, Ni and Mo are different at different localities around the deposit. Leaching tests indicate that burned and unburned shale residues leave different signatures on leachates. Principal component analysis of groundwater and leaching tests suggest that ground-water is affected by the waste deposit and that it is more influenced by shale ash than by fines.

sted, utgiver, år, opplag, sider
Lappeenranta, Finland: Lappeenranta University of Technology, 2017
Emneord
Alum shale, Kvarntorp, Shale oil, Leaching, Uranium
HSV kategori
Forskningsprogram
Kemi
Identifikatorer
urn:nbn:se:oru:diva-71956 (URN)978-952-335-065-6 (ISBN)
Konferanse
IMWA 2017, Mine Water & Circular Economy, 13th International Mine Water Association Congress, Lappeenranta, Finland, 25-30 June, 2017
Tilgjengelig fra: 2019-01-30 Laget: 2019-01-30 Sist oppdatert: 2019-03-26bibliografisk kontrollert
Sjöberg, V. (2017). Utilization of waste materials for extraction of strategic metals: a biogeochemical approach. (Doctoral dissertation). Örebro: Örebro University
Åpne denne publikasjonen i ny fane eller vindu >>Utilization of waste materials for extraction of strategic metals: a biogeochemical approach
2017 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Worldwide the modern society produces vast amounts of waste materials containing strategic and valuable metals. Some of them are of substantial economic or environmental significance if controlled recovery of metals can be performed or if uncontrolled release to the environment occurs.

By cultivating Agrostis capillaris on historical sulfidic mine waste the leachate composition can be altered and its volume reduced. In combination with additives such as bark compost and water works granules the concentration of several hazardous metals decreased significantly already after eight weeks. Limited actions can therefore be used to decrease the environmental impact from such waste.

Shale in general contains considerable amounts of strategic metals. If naturally occurring microorganisms are provided with a source of nutrients, increased mobilization of strategic metals can be obtained. By using wood chips as the nutrient source the mobilization of vanadium and uranium increased significantly. Highest mobilization efficiency was observed when the carbon source was put on top of the shale.

Analysis of strategic metals is often performed by argon plasma techniques such as ICP-QMS. However, the use of argon increases the analytical costs. If isotopic information is not needed and slightly higher uncertainties can be accepted, several strategic metals can successfully be quantified by the nitrogen plasma based MP AES. The analytical cost can then be cut with more than 99%.

sted, utgiver, år, opplag, sider
Örebro: Örebro University, 2017. s. 79
Serie
Örebro Studies in Environmental Science, ISSN 1650-6278 ; 17
Emneord
biogeochemistry, ICP-QMS, MP AES, strategic metals, vanadium, uranium, mine waste, steel slag, shale residues
HSV kategori
Forskningsprogram
Miljövetenskap
Identifikatorer
urn:nbn:se:oru:diva-53960 (URN)978-91-7529-174-1 (ISBN)
Disputas
2017-02-17, Örebro universitet, Hörsalen, Musikhögskolan, Fakultetsgatan 1, Örebro, 10:15 (svensk)
Opponent
Veileder
Tilgjengelig fra: 2016-12-14 Laget: 2016-12-14 Sist oppdatert: 2017-10-18bibliografisk kontrollert
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0001-7845-6495