Comparative biogeochemical behaviors of iron-55 and stable iron in the marine environment

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Description

Studies of atmospheric aerosols have demonstrated that much of the /sup 55/Fe associated with the aerosol input to the oceans is present as either an amorphous or hydrous iron oxide or as very small particulate species attached to the surfaces of the large aerosol particles. By comparison, nearly all of the stable iron is bound in the mineral phase of aerosol particles. This difference in the chemical and physical forms of the radioactive and stable iron isotopes results in the /sup 55/Fe being more biologically available than is the stable iron. This difference in availability is responsible for the transfer ... continued below

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Pages: 32

Creation Information

Weimer, W.C.; Langford, J.C. & Jenkins, C.E. February 6, 1978.

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  • Pacific Northwest Laboratory
    Publisher Info: Battelle Pacific Northwest Labs., Richland, Wash. (USA)
    Place of Publication: Richland, Washington

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Description

Studies of atmospheric aerosols have demonstrated that much of the /sup 55/Fe associated with the aerosol input to the oceans is present as either an amorphous or hydrous iron oxide or as very small particulate species attached to the surfaces of the large aerosol particles. By comparison, nearly all of the stable iron is bound in the mineral phase of aerosol particles. This difference in the chemical and physical forms of the radioactive and stable iron isotopes results in the /sup 55/Fe being more biologically available than is the stable iron. This difference in availability is responsible for the transfer of a much higher specific activity /sup 55/Fe to certain ocean organisms and man relative to the specific activity of the total aerosol or of sea water. This differential biological uptake of the radioactive element and its stable element counterpart points out that natural levels of stable elements in the marine environment may not effectively dilute radioelements or other stable elements of anthropogenic sources. The effectiveness of dilution by natural sources depends on the chemical and physical forms of the materials in both the source terms and the receiving environments. The large difference in specific activities of /sup 55/Fe in aerosols and sea water relative to ocean organisms reflects the independent behaviors of /sup 55/Fe and stable iron.

Physical Description

Pages: 32

Notes

Dep. NTIS, PC A03/MF A01.

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  • Report No.: PNL-2280
  • Grant Number: EY-76-C-06-1830
  • DOI: 10.2172/5048796 | External Link
  • Office of Scientific & Technical Information Report Number: 5048796
  • Archival Resource Key: ark:/67531/metadc1054973

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • February 6, 1978

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • Feb. 1, 2018, 1:54 p.m.

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Weimer, W.C.; Langford, J.C. & Jenkins, C.E. Comparative biogeochemical behaviors of iron-55 and stable iron in the marine environment, report, February 6, 1978; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc1054973/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.