Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
1995
Abstract
No abstract has been registered
Authors
Dan Aamlid Hans Tømmervik Michael L. Gytarsky Rodion Karaban Kåre Olav Venn Tord K. Rindal Natalya Vassilieva Galina N. Koptsik E.M. LøbersliAbstract
No abstract has been registered
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No abstract has been registered
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No abstract has been registered
Authors
E.M. Løbersli Kåre Olav VennAbstract
No abstract has been registered
Authors
B. Mankovska K. Vrana Eiliv Steinnes Richard HorntvedtAbstract
No abstract has been registered
Authors
Praveen Sharma Anders LönneborgAbstract
No abstract has been registered
Authors
Torild Wickstrøm W. Lund R. ByeAbstract
The use of an alkaline sample solution for the determination of Se by the hydride generation technique offers the possibility of eliminating the interference from very high concentrations of Ni2, CO2, Fe3 and Cr3. In order to achieve this, complexing agents were employed to mask the interfering metal ions, After addition of the masking agent, the pH was adjusted to 12-13 with NaOH, and sodium tetrahydroborate was finally added in order to reduce selenite to selenide ions. The selenium hydride was generated by acidifying the solution with HCl in a flow system.Ethylenediaminetetraacetic acid and diethylenetriaminepentaacetic acid (DTPA) were found to be effective masking agents for Ni2 and Co2; the, interference from up to 8000 mg l(-1) of Ni2 or Co2 was eliminated. Tartrate was found to be a suitable masking agent for Fe3 and Cr3 UP to 5000 mg l(-1). Accurate results were obtained for the National Institute of Standards and Technology Standard Reference Materials 671 Nickel Oxide and 364 Low-alloy Steel, using combinations of DTPA and tartrate as masking agents. The detection limits were 0.1 mu g g(-1) for the Nickel Oxide and 0.3 mu g g(-1) for the Low-alloy Steel.
Authors
Finn Roll-Hansen Helga Roll-HansenAbstract
No abstract has been registered
Authors
Alan A. Berryman Erik ChristiansenAbstract
No abstract has been registered