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  • 1
    Electronic Resource
    Electronic Resource
    Determination of sulfide in pyritic soils and minerals with a sulfide ion electrode (1979)
    s.l. : American Chemical Society
    Analytical chemistry 51 (1979), S. 1870-1872 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50047a065
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Potential for changing phytoplankton growth in Lake Powell due to oil shale development (1980)
    s.l. : American Chemical Society
    Environmental science & technology 14 (1980), S. 683-690 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es60166a016
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  • 3
    Electronic Resource
    Electronic Resource
    Less mercury? (1994)
    [s.l.] : Nature Publishing Group
    Nature 367 (1994), S. 694-694 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Camargo1 dismisses Nriagu's2 assertion that mercury emissions from precious-metal refining in the early New World may have an impact on the present-day global mercury cycle. Unfortunately, Camarago's argument is undermined by the use of outdated, poor-quality data collected before ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/367694a0
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  • 4
    Electronic Resource
    Electronic Resource
    An assessment of the ecological effects of acidic deposition (1989)
    Springer
    Archives of environmental contamination and toxicology 18 (1989), S. 3-27 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Research on the ecological effects of acidic deposition has yielded information that currently permits a partial assessment of these effects. Establishing a relationship between deposition of acidity and ecological effects is a difficult, lengthy process; the complexity of ecosystems requires an integrated mechanism-level approach in order to obtain quantitative and predictive information. Known ecological effects of acidic deposition appear in surface waters and probably forest eco-systems in eastern North America, northern, and central Europe. Almost all documented anthropogenically acidified surface waters in North America occur in the Adirondack Mountains. The effect of anthropogenic acidification on fish, expressed regionally, seems to be small compared to the total resource at risk. The current rate of acidification of surface water in North America appears to be slow. Acidification of surface water is temporarily reversed with addition of CaCO3. Fish tend to have higher Hg body burdens at lower pH of ambient water. Vertebrates other than fish and amphibians have not been affected by acidification, with the possible exception of local populations of piscivores and insectivores. Some lakes are apparently culturally acidified in southern Scandinavia and southern Scotland, but the limitations of the data restrict assessments. Forest decline is a widespread natural process that may be exacerbated by air pollution. Acidic deposition may contribute to forest decline by interaction with ozone and by the leaching of nutrients from soil. In North America, high elevation red spruce is in an unexplained decline to which both ozone and acidic deposition may be contributing. Acidic deposition may be exerting some unmeasured effect on forest decline in Germany by the further leaching of nutrient deficient soils. Extensive experimental work has failed to disclose unambiguous effects of acidic deposition on crops.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01056188
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  • 5
    Electronic Resource
    Electronic Resource
    Assessing selenium cycling and accumulation in aquatic ecosystems (1996)
    Springer
    Water, air & soil pollution 90 (1996), S. 93-104 
    Details
    ISSN: 1573-2932
    Keywords: selenium ; biogeochemical cycling ; bioaccumulation ; toxicity experiments ; simulation model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract We conducted a joint experimental research and modeling study to develop a methodology for assessing selenium (Se) toxicity in aquatic ecosystems. The first phase of the research focused on Se cycling and accumulation. In the laboratory, we measured the rates and mechanisms of accumulation, transformation, and food web transfer of the various chemical forms of Se that occur in freshwater ecosystems. Analytical developments helped define important Se forms. We investigated lower trophic levels (phytoplankton and bacteria) first before proceeding to experiments for each successive trophic component (invertebrates and fish). The lower trophic levels play critical roles in both the biogeochemical cycling and transfer of Se to upper trophic levels. The experimental research provided the scientific basis and rate parameters for a computer simulation model developed in conjunction with the experiments. The model includes components to predict the biogeochemical cycling of Se in the water column and sediments, as well as the accumulation and transformations that occur as Se moves through the food web. The modeled processes include biological uptake, transformation, excretion, and volatilization; oxidation and reduction reactions; adsorption; detrital cycling and decomposition processes; and various physical transport processes within the water body and between the water column and sediments. When applied to a Se-contaminated system (Hyco Reservoir), the model predicted Se dynamics and speciation consistent with existing measurements, and examined both the long-term fate of Se loadings and the major processes and fluxes driving its biogeochemical cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619271
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  • 6
    Electronic Resource
    Electronic Resource
    Preface (1995)
    Springer
    Water, air & soil pollution 80 (1995), S. xiii 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01189645
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  • 7
    Electronic Resource
    Electronic Resource
    Experimental liming of watersheds: an international cooperative effort between the United States and West Germany (1988)
    Springer
    Water, air & soil pollution 41 (1988), S. 455-471 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract An intergrated, international cooperative program has been initiated to manipulate two watersheds. This will include soil liming and/or fertilization of two watersheds, one in New York State and another in the Black Forest of West Germany. A description of the watersheds and approach is documented in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00160362
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  • 8
    Electronic Resource
    Electronic Resource
    Assessing Se cycling and toxicity in aquatic ecosystems (1991)
    Springer
    Water, air & soil pollution 57-58 (1991), S. 3-11 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Toxic substances exert impacts on ecosystems at several levels: biogeochemical, toxicological, and populations/communities. Integrating exposure (biogeochemistry) and effects (toxicology) into an ecological context requires models as a necessary step to prediction and assessment of effects on populations and their interactions. To this end, research is being conducted to develop techniques for predicting the effects of Se on aquatic ecosystems. The objective is to develop mechanistic models to predict biogeochemical cycling, toxicological processes, and toxic effects on population and community dynamics. Earlier research demonstrated that different chemical forms of Se have different toxicological properties. Biogeochemical research culminated with a dynamic model of the Se cycle. In ongoing research, experiments are being conducted on microorganisms, phytoplankton, microzooplankton, zooplankton, benthic invertebrates, and fish to measure uptake, biotransformation, and depuration kinetics of different chemical forms of Se, transfer through the food web, and effects on growth, reproduction, community interactions, and survival. This information will provide the basis for the ecosystem effects model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00282863
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  • 9
    Electronic Resource
    Electronic Resource
    Acknowledgments (1995)
    Springer
    Water, air & soil pollution 80 (1995), S. xiv 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01189646
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