Distribution of transuranic elements in a freshwater pond ecosystem

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Preliminary results are reported from a study initiated on the Hanford Reservation concerning the ecological behavior of $sup 238$Pu, $sup 239$Pu, $sup 240$Pu, and $sup 241$Am in a freshwater environment. This study involves a waste pond which has been receiving Pu processing wastes for about 30 years. The pond has a sufficiently established ecosystem to provide an excellent location for limnological characterization. In addition, the ecological distribution of Pu and Am was investigated. The pond is also highly enriched with nutrients, thus supporting a high level of algal and macrophyte production. Seston (30 percent diatoms) appears to be the principal ... continued below

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Pages: 23

Creation Information

Emery, R.M. & Klopfer, D.C. May 1, 1975.

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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

Preliminary results are reported from a study initiated on the Hanford Reservation concerning the ecological behavior of $sup 238$Pu, $sup 239$Pu, $sup 240$Pu, and $sup 241$Am in a freshwater environment. This study involves a waste pond which has been receiving Pu processing wastes for about 30 years. The pond has a sufficiently established ecosystem to provide an excellent location for limnological characterization. In addition, the ecological distribution of Pu and Am was investigated. The pond is also highly enriched with nutrients, thus supporting a high level of algal and macrophyte production. Seston (30 percent diatoms) appears to be the principal concentrators of Pu transuranics in the pond system. The major sink for Pu and Am in this system is the sediments. Organic floc, overlaying the pond sediments, is also a major concentrator of transuranics in this system. Aside from the seston and floc, no other ecological components of the pond appear to have concentrations significantly greater than those of the sediment. Dragonfly, larvae, watercress, and snails show concentrations which approximate those of the sediments but nearly all other food web components have levels of Pu and Am which are lower than those of the sediments, thus, Pu and Am seem to be relatively immobile in the aquatic ecosystem. (CH)

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Pages: 23

Notes

Dep. NTIS

Source

  • 8. international conference on environmental toxicology, Rochester, New York, USA, 1 Jun 1975

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  • Report No.: BNWL-SA--5424
  • Report No.: CONF-750672--1
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4174920
  • Archival Resource Key: ark:/67531/metadc870826

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  • May 1, 1975

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Dec. 5, 2016, 2:25 p.m.

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Emery, R.M. & Klopfer, D.C. Distribution of transuranic elements in a freshwater pond ecosystem, article, May 1, 1975; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc870826/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.