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. Lundstedt, S.
    et al.
    Gustavsson, N.
    Hanberg, A.
    Stiernström,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Oavsiktligt bildade ämnens hälso- och miljörisker - en kunskapsöversikt2007Report (Other (popular science, discussion, etc.))
  • 2. Lundstedt, Staffan
    et al.
    Gustavsson, Niklas
    Hakner, Sara
    Hanberg, Annika
    Stiernström, Sara
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    de Wit, Cyntha A.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Oavsiktligt bildade ämnens hälso- och miljörisker – en kunskapsöversikt, Rapport 57362007Report (Other (popular science, discussion, etc.))
  • 3.
    Minten, Johanna
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Adolfsson-Erici,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Ulfsdotter Turesson, E.
    Stiernström,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Utveckling av en analysmetod för pesticiden tebuconazole med vätskekromatografi och UV-diode-array detektor avsett för att utvärdera ett ekotoxikologiskt testsystem där den bentiska sötvattenorganismen Attheyella crassa exponerats för tebuconazole2007In: SNMM: March 12-14 2007, 2007Conference paper (Other (popular science, discussion, etc.))
  • 4.
    Stiernström,
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Ulfsdotter Turesson, E.
    Minten,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Adolfsson-Erici,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Bengtsson, Bengt-Erik
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz,
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    A novel reproduction and development sediment toxicity test with the freshwater harpacticoid copepod /Attheyella crassa/.2007In: SETAC 17th Annual Meeting in Europe, Porto, Portugal: 20-24 May, 2007Conference paper (Other (popular science, discussion, etc.))
  • 5.
    Stiernström, Sara
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Ecotoxicological classification of ash materials2013Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Incineration of waste is increasing in the EU. However, in the incineration process, both fly and bottom ash materials are generated as waste that requires further action. A common goal throughout Europe is to find ways to utilize ash materials in an environmentally and economically efficient manner in accordance with the current legislation. This legislation is the Waste Framework Directive (WFD) which lists essential properties (H-criteria) to classify waste, as hazardous or not. Of these criteria, ecotoxicity (H-14) should be classified based on the wastes’ inherent hazardous properties. The WFD further states that this classification should be based on the Community legislation on chemicals (the CLP Regulation). Today, there are no harmonized quantitative criteria for the H-14 classification in the WFD, but there is a proposal from the EU on a computing model that summarizes all the measured elements classified as ecotoxic in the solid material. However, there may be a poor relationship between the theoretical ecotoxicity, based on analysed individual elements, and their actual contribution to the measured total toxicity. Therefore, to reduce the risk of incorrectly assessing the hazard potential, the overall aim of this doctoral Thesis was to develop a scientifically well-founded basis for the choice of leaching methodology and ecotoxicity testing for the H-14 classification of ash materials in Europe. In Paper I, different ash materials were classified, two leaching methods were compared and the sensitivity as well as the usefulness of a selected number of aquatic ecotoxicity tests were evaluated. Paper III and IV studied different leaching conditions, relevant for both hazard classification and risk evaluation of ash. Moreover, all four papers investigated potentially causative ecotoxic elements in the ash leachates. The results from this Thesis show that elements not classified as ecotoxic in the chemical legislation have a significant influence on the overall toxicity of the complex ash materials and will be considered if using the approach with ecotoxicity tests on ash leachates, but not if using the computing model. In addition, the approach of comparing chemically analysed elements in the solid ash with literature toxicity data for the same elements systematically over-estimates the hazard potential. This emphasizes the importance of using leaching tests in combination with ecotoxicity tests for the ecotoxicity classification of ash materials, at least if the aim is to fully understand the inherent hazard potential of the ash. To conclude, the recommendation for H-14 classification of ash is that leachates should be prepared using the leaching test and conditions evaluated in Paper III and that the generated leachates should be tested in a battery of test organisms representing a wide range of biological variation and different routes of exposure. This classification proposal has support in the CLP Regulation and contributes to harmonizing the waste and chemical legislation.

  • 6.
    Stiernström, Sara
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Enell, A.
    Wik, O.
    Borg, Hans
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    An ecotoxicological evaluation of aged bottom ash for use in constructions2014In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 34, no 1, p. 86-92Article in journal (Refereed)
    Abstract [en]

    Municipal and Industrial Solid Waste Incineration (MISWI) bottom ash is mainly deposited in landfills, but natural resources and energy could be saved if these ash materials would be used in geotechnical constructions. To enable such usage, knowledge is needed on their potential environmental impact. The aim of this study was to evaluate the ecotoxicity of leachates from MISWI bottom ash, aged for five years, in an environmental relevant way using a sequential batch leaching method at the Liquid/Solid-ratio interval 1-3, and to test the leachates in a (sub)chronic ecotoxicity test. Also, the leachates were characterized chemically and with the technique of diffusive gradients in thin films (DGTs). By comparing established ecotoxicity data for each element with chemically analysed and labile concentrations in the leachates, potentially problematic elements were identified by calculating Hazard Quotients (HQ). Overall, our results show that the ecotoxicity was in general low and decreased with increased leaching. A strong correspondence between calculated HQs and observed toxicity over the full L/S range was observed for K. However, K will likely not be problematic from a long-term environmental perspective when using the ash, since it is a naturally occurring essential macro element which is not classified as ecotoxic in the chemical legislation. Although Cu was measured in total concentrations close to where a toxic response is expected, even at L/S 3, the DGT-analysis showed that less than 50% was present in a labile fraction, indicating that Cu is complexed by organic ligands which reduce its bioavailability.

  • 7.
    Stiernström, Sara
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Enell, A.
    Wik, O.
    Hemström, K.
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Influence of leaching conditions for ecotoxicological classification of ash2014In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 34, no 2, p. 421-429Article in journal (Refereed)
    Abstract [en]

    The Waste Framework Directive (WFD; 2008/98/EC) states that classification of hazardous ecotoxicological properties of wastes (i.e. criteria H-14), should be based on the Community legislation on chemicals (i.e. CLP Regulation 1272/2008). However, harmonizing the waste and chemical classification may involve drastic changes related to choice of leaching tests as compared to e.g. the current European standard for ecotoxic characterization of waste (CEN 14735). The primary aim of the present study was therefore to evaluate the influence of leaching conditions, i.e. pH (inherent pH (similar to 10), and 7), liquid to solid (L/S) ratio (10 and 1000 L/kg) and particle size (<4 mm, <1 mm, and <0.125 mm), for subsequent chemical analysis- and ecotoxicity testing in relation to classification of municipal waste incineration bottom ash. The hazard potential, based on either comparisons between element levels in leachate and literature toxicity data or ecotoxicity testing of the leachates, was overall significantly higher at low particle size (<0.125 mm) as compared to particle fractions <1 mm and <4 mm, at pH 10 as compared to pH 7, and at L/S 10 as compared to L/S 1000. These results show that the choice of leaching conditions is crucial for H-14 classification of ash and must be carefully considered in deciding on future guidance procedures in Europe.

  • 8.
    Stiernström, Sara
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Enell, Anja
    Wik, Ola
    Borg, Hans
    Breitholtz, Hans
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    AN ECOTOXICOLOGICAL EVALUATION OF AGED BOTTOM ASH FOR USE IN CONSTRUCTIONManuscript (preprint) (Other academic)
    Abstract [en]

    Municipal and Industrial Solid Waste Incineration (MISWI) bottom ash is mainly deposited in landfills, but natural resources and energy could be saved if these ash materials would be used in geotechnical constructions. To enable such usage, knowledge is needed on their potential environmental impact. The aim of this study was to evaluate the ecotoxicity of leachates from aged MISWI bottom ash in an environmental relevant way, using a sequential batch leaching method at the Liquid/Solid-ratio interval 1 to 3, and to test the leachates in a (sub)chronic ecotoxicity test. Also, the leachates were characterized chemically and with the technique of diffusive gradients in thin films (DGTs). By comparing established ecotoxicity data for each element with chemically analysed and labile concentrations in the leachates, potentially problematic elements were identified by calculating Hazard Quotients (HQ). Overall, our results show that the ecotoxicity was in general low and decreased with increased leaching. A strong correspondence between calculated HQs and observed toxicity over the full L/S range was observed for K. However, K will likely not be problematic from a long-term environmental perspective when using the ash, since it is a naturally occurring essential macro element which is not classified as ecotoxic in the chemical legislation. Although Cu was measured in total concentrations close to where a toxic response is expected, even at L/S 3, the DGT-analysis showed that less than 50 % was present in a labile fraction, indicating that Cu is complexed by organic ligands which reduce its bioavailability.

  • 9.
    Stiernström, Sara
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Enell, Anja
    Wik, Ola
    Hemström, Kristian
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    INFLUENCE OF LEACHING CONDITIONS FOR ECOTOXICOLOGICAL CLASSIFICATION OF ASHManuscript (preprint) (Other academic)
    Abstract [en]

    The Waste Framework Directive (WFD; 2008/98/EC) states that classification of hazardous ecotoxicological properties of wastes (i.e.criteria H-14), should be based on the Community legislation on chemicals (i.e.CLP Regulation 1272/2008). However, harmonizing the waste and chemical classification may involve drastic changes related to choice of leaching tests as compared to e.g. the current European standard for ecotoxic characterization of waste (CEN 14735). The primary aim of the present study was therefore to evaluate the influence of leaching conditions, i.e. pH (inherent pH (~10), and 7), liquid to solid (L/S) ratio (10 and 1000L/kg) and particle size (< 4 mm, < 1 mm, and < 0.125 mm), for subsequent chemical analysis and ecotoxicity testing in relation to classification of municipal waste incineration bottom ash. The hazard potential, based on either comparisons between element levels in leachate and literature toxicity data or ecotoxicological testing of the leachates, was overall significantly higher at low particle size (<0.125 mm) as compared to particle fractions < 1 mm and < 4 mm, at pH 10 as compared to pH 7, and at L/S 10 as compared to L/S 1000. These results show that the choice of leaching conditions is crucial for H-14 classification of ash and must be carefully considered in deciding on future guidance procedures in Europe.

  • 10.
    Stiernström, Sara
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Hemström, K.
    Wik, O.
    Carlsson, G.
    Bengtsson, B. -E
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    An ecotoxicological approach for hazard identification of energy ash2011In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 31, no 2, p. 342-352Article in journal (Refereed)
    Abstract [en]

    Within the EU, ash should be classified by its inherent hazardous effects under criterion H-14 (ecotoxic) in the Directive on waste (2008/98/EC). Today, however, there are no harmonized quantitative criterions for such a classification, but it is stated that biological test systems can be used. In this study seven ash materials were leached and characterized, both biologically and chemically. The objectives were to evaluate if (a) clear concentration-response relationships could be achieved for the selected toxicity tests (bacteria, algae, crustacean and fish). (b) some test(s) are generally more sensitive and (c) the toxic responses were consistent with the chemical analyzes. Interestingly, our results indicate that high concentrations of non-hazardous components (Ca, K) influenced the toxicity of almost all ash eluates, whereas hazardous components (e.g. Zn, Pb) only influenced the toxicity of the eluates ranked as most hazardous. If considering both hazardous and non-hazardous substances, the observed toxic responses were relatively consistent with the chemical analyzes. Our results further showed that the (sub)chronic tests were much more sensitive than the acute tests. However, the use of extrapolation factors to compensate for using the less sensitive acute tests will likely lead to either over- or underestimations of toxicity. Our recommendation is therefore that classification of waste according to H-14 should be based on (sub)chronic test data. Finally, given that treatment of the eluates prior to toxicity testing has a major significance on the concentration and speciation of released substances, further studies are needed in order to propose a relevant testing scheme.

  • 11.
    Stiernström, Sara
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Linde, Margareta
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Hemström, K.
    Wik, O.
    Ytreberg, Erik
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Bengtsson, Bengt-Erik
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Improved understanding of key elements governing the toxicity of energy ash eluates2013In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 33, no 4, p. 842-849Article in journal (Refereed)
    Abstract [en]

    Ash from incinerated waste consists mainly of a complex mixture of metals and other inorganic elements and should be classified based on its inherent hazardous effects according to EUs Waste Framework Directive. In a previous study, we classified eight eluates from ash materials from Swedish incineration plants, both chemically and ecotoxicologically (using bacteria, algae, crustacean and fish). Based on measured concentrations in the eluates together with literature acute toxicity data on the crustacean Nitocra spinipes we identified six elements (i.e. Zn, Cu, Pb, Al, K and Ca) potentially responsible for the observed ecotoxicity. However, comparing the used test methods with N. spinipes, the acute test was relatively insensitive to the eluates, whereas the (sub)chronic test (i.e. a partial life cycle test, investigating larval development ratio) was very sensitive. The overall aim of this follow-up study was to verify if the pinpointed elements could be responsible for the observed (sub)chronic toxicity of the eluates. Individual effect levels (i.e. NOEC values) for these six elements were therefore generated using the (sub)chronic test. Our results show that for six of the eight eluates, the observed ecotoxicity can be explained by individual elements not classified as ecotoxic (Al, K and Ca) according to chemical legislation. These elements will not be considered using summation models on elements classified as ecotoxic in solid material for the classification of H-14, but will have significant implications using ecotoxicological test methods for this purpose.

  • 12.
    Ulfsdotter Turesson, Eva
    et al.
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Stiernström, Sara
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Minten, Johanna
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Adolfsson-Erici, Margaretha
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Bengtsson, Bengt-Erik
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Breitholtz, Magnus
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Development and reproduction of the freshwater harpacticoid copepod Attheyella crassa for assessing sediment-associated toxicity2007In: Aquatic Toxicology, ISSN 0166-445X, E-ISSN 1879-1514, Vol. 83, no 3, p. 180-9Article in journal (Refereed)
    Abstract [en]

    Both freshwater and marine sediments are sinks for many anthropogenic substances. This may pose a risk to benthic and epibenthic organisms and it is crucial that toxicity tests that are available for environmental risk assessment can identify potentially adverse effects of sediment-associated substances on benthic organisms, such as harpacticoid copepods. While marine harpacticoids have been protected via a number of acute and chronic sediment tests, the freshwater harpacticoid copepod community has so far been neglected in such activities. The main aim of the present study was therefore to (a) find a suitable freshwater harpacticoid copepod, (b) establish robust laboratory mass cultures and (c) develop a chronic test for assessment of sediment-associated toxicity using spiked sediments. After several cultivation trials with a number of potential test species, the choice fell on the benthic freshwater harpacticoid copepod Attheyella crassa, a species that possesses many of the characteristic features identified as prerequisites for toxicity test organisms, e.g. it has a sexual reproduction, it is relatively easy to grow and keep in mass cultures in the laboratory, and it has a small body size. Owing to the relatively long generation time of freshwater harpacticoids (in relation to many marine harpacticoids), it was decided that the test should be separated into a development part (21 days) and a reproduction part (14 days) running in parallel. As a reference substance we used the fungicide tebuconazole, which is currently subject to risk assessment and which partitions to soil and sediment. Clear concentration-related responses were observed for all endpoints analyzed. Nauplia body length was the most sensitive endpoint with a measured time weighted LOEC(water) of 20microg/L. The corresponding LOEC(water) for larval mortality and offspring production was 65 and 62microg/L, respectively. In conclusion, A. crassa is an ecologically relevant test species for freshwater ecosystems and particularly for the cold, oligotrophic and often acidic lakes of Northern Europe. Regardless of the relatively long generation time of this species, our results clearly show that sediment-associated toxicity related to development and sexual reproduction can be assessed within 2-3 weeks exposure with the developed bioassay.

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