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  • 1
    Electronic Resource
    Electronic Resource
    Ionic strength and DOC determinations from various freshwater sources to the San Francisco Bay (1994)
    Springer
    Bulletin of environmental contamination and toxicology 52 (1994), S. 311-318 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00198505
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Culturing Selenastrum capricornutum (Chlorophyta) in a synthetic algal nutrient medium with defined mineral particulates (1985)
    Springer
    Hydrobiologia 124 (1985), S. 23-271 
    Details
    ISSN: 1573-5117
    Keywords: algal growth ; sorption ; chemical speciation ; micronutrients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Algal nutrient studies in chemically-defined media typically employ a synthetic chelator to prevent iron hydroxide precipitation. Micronutrient-particulate interactions may, however, significantly affect chemical speciation and hence biovailability of these nutrients in natural waters. A technique is described by which Selenastrum capricornutum Printz (Chlorophyta) may be cultured in a medium where trace metal speciation (except iron) is controlled, not by organic chelation, but by sorption onto titanium dioxide. Application of this culturing protocol in conjunction with results from sorption studies of nutrient ions on mineral particles provides a means of studying biological impacts of sorptive processes in aquatic environments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011393
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Anomalously high237Np in intertidal sediments from the Ribble Estuary in the Irish Sea (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 197 (1995), S. 369-385 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Depth profiles and inventories of237Np in sediment cores from the Ribble Estuary in the Irish Sea have been studied along with those of Pu isotopes,241Am and137Cs, to allow a more detailed look of anomalously high237Np content observed in this estuary previously. The comprehensive data obtained showed that the depth profiles of both237Np contents and237Np/239,240Pu activity ratios were clearly different from those of239,240Pu,241Am, and137Cs and their activity ratios. As much as 80–90% of237Np inventories (0.32–1.06 kBq/m2), found in three cores, were estimated to be derived from a source other than Sellafield, on the basis of comparison of the237Np/239,240Pu inventory ratio (0.65–1.74%) found in the Ribble Estuary cores with those (0.10–0.16%) in the Ravenglass Estuary cores.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02036012
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Measurements of99Tc,137Cs,237Np, Pu isotopes and241Am in sediment cores from intertidal coastal and estuarine regions in the Irish Sea (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 240 (1999), S. 593-601 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Long-lived radionuclides,99Tc,137Cs,237Np, Pu isotopes and241Am were determined in the long sediment cores collected from nine intertidal sites around the west Cumbria of the Irish Sea, UK. The inventories of all nuclides measured varied considerably among the sampling sites, but generally their inventories decreased with increasing distance from Sellafield. Furthermore, the inventory ratios with respect to relationship with distance from Sellafield enabled comparison of transport behavior of99Tc,137Cs,237Np and241Am compared with239,240Pu. As a consequence, the apparent fractional rate of solution transport to the intertidal sediment was found to increase as follows:99Tc〉137Cs〉237Np〉239,240Pu≥241Am.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349419
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  • 5
    Electronic Resource
    Electronic Resource
    Polonium-210 and lead-210 in marine organisms: Intake levels for Japanese (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 178 (1994), S. 81-90 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The concentrations of210Po and210Pb were determined in about 30 species of marine organisms collected mainly from the north-easterm region of Japan to know the levels and distributions of these radionuclides and to estimate their intake levels from marine foods.210Po and210Pb showed a wide range of concentration in species: 0.6–26 and 0.04–0.54 Bq/kg (wet wt) in fishes, 0.5–220 and 0.2–43 Bq/kg (wet wt) in molluscs, echinoderms and chordatas, and 2.8–4.3 and 0.4–1.3 Bq/kg (wet wt) in algae, respectively. Higher accumulation of210Po relative to210Pb was found in all of the samples analyzed. The intake levels of210Po and210Pb by marine foods consumption were roughly estimated to be 0.48–0.69 and 0.022–0.042 Bq/d per person, respectively, on the basis of the statistical data on the consumption of seafood and/or production rates of marine foods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068659
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    Paper (German National Licenses)
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