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.

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1995

Lecture – Determination of exceedance of critical levels in the border area between Norway and Russia

Dan Aamlid, Hans Tømmervik, Michael L. Gytarsky, ...

In: Løbersli, E. & K. Venn (eds.): Effects of air pollutants on terrestrial ecosystems in the border area between Norway and Russia. Proceedings from the second symposium Svanvik, Norway, 3.-5.10.94. Utredning for DN, 1995/8 1995. 19-24

Authors

Dan Aamlid Hans Tømmervik Michael L. Gytarsky Rodion Karaban Kåre Olav Venn Tord K. Rindal Natalya Vassilieva Galina N. Koptsik E.M. Løbersli

Abstract

No abstract has been registered

Academic – Determination of selenium by hydride generation atomic-absorption spectrometry - elimination of interferences from very high-concentrations of nickel, cobalt, iron and chromium by complexation

Torild Wickstrøm, W. Lund, R. Bye

Journal of Analytical Atomic Spectrometry, 10 1995. 803-808

Authors

Torild Wickstrøm W. Lund R. Bye

Abstract

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.

Lecture – Dieback and decline of forest plantations of Larix sibirica in Iceland

Halldór Sverrisson

Aktuelt fra Skogforsk, 4/95 1995. 35-37

Authors

Halldór Sverrisson

Abstract

No abstract has been registered

Lecture – Discoloration of birch trees after wounding or breakage

Arja Lilja, Risto Heikkilä

Aktuelt fra Skogforsk, 4/95 1995. 30-32

Authors

Arja Lilja Risto Heikkilä

Abstract

No abstract has been registered

Lecture – Discoloration of planted silver birch

Anna-Maija Hallaksela

Aktuelt fra Skogforsk, 4/95 1995. 33-34

Authors

Anna-Maija Hallaksela

Abstract

No abstract has been registered

Lecture – Diseases of Scots pine, spruce and birch in Finnish nurseries

Antti Uotila

Aktuelt fra Skogforsk, 4/95 1995. 38-39

Authors

Antti Uotila

Abstract

No abstract has been registered

Lecture – Distribution of Gremmeniella abietina in Northern Finland and Kola Peninsula

Juha Kaitera, Risto Jalkanen

Aktuelt fra Skogforsk, 4/95 1995. 45-49

Authors

Juha Kaitera Risto Jalkanen

Abstract

No abstract has been registered

Report – Diversity patterns of two insect groups within spruce forests of southern Norway

Bjørn Økland

Doctor Scientiarum Theses. Norges landbrukshøgskole, 1995/21 1995. 125 s.

Authors

Bjørn Økland

Abstract

No abstract has been registered

Lecture – Do conifer bark beetles require fungi to kill trees?

Michael J. Wingfield, T.C. Harrington, Halvor Solheim

Aktuelt fra Skogforsk, 6/95 1995. 6

Authors

Michael J. Wingfield T.C. Harrington Halvor Solheim

Abstract

No abstract has been registered

Lecture – Does Ips duplicatus transport sapwood staining fungi?

Heli Valkama

Aktuelt fra Skogforsk, 6/95 1995. 44-45

Authors

Heli Valkama

Abstract

No abstract has been registered

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