Plutonium and americium in Lake Michigan sediments

PDF Version Also Available for Download.

Description

The vertical distributions of $sup 239$,$sup 240$Pu, $sup 238$Pu, and $sup 137$Cs have been measured in sediment cores taken from Lake Michigan. Sections from a limited number of cores have been analyzed for $sup 241$Am. In addition, grab samples from ten locations in the southern basin of the lake have been analyzed for phase distribution of $sup 239$,$sup 240$Pu using a sequential extraction technique. The results indicate that the $sup 239$,$sup 240$Pu, $sup 238$Pu, and $sup 137$Cs from weapons testing, and the $sup 241$Am formed in situ are concentrated in the sediments. A comparison of the total deposition of $sup ... continued below

Physical Description

14 p.

Creation Information

Edgington, D.N.; Alberts, J.J.; Wahlgren, M.A.; Karttunen, J.O. & Reeve, C.A. January 1, 1975.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

The vertical distributions of $sup 239$,$sup 240$Pu, $sup 238$Pu, and $sup 137$Cs have been measured in sediment cores taken from Lake Michigan. Sections from a limited number of cores have been analyzed for $sup 241$Am. In addition, grab samples from ten locations in the southern basin of the lake have been analyzed for phase distribution of $sup 239$,$sup 240$Pu using a sequential extraction technique. The results indicate that the $sup 239$,$sup 240$Pu, $sup 238$Pu, and $sup 137$Cs from weapons testing, and the $sup 241$Am formed in situ are concentrated in the sediments. A comparison of the total deposition of $sup 239$,$sup 240$Pu and $sup 137$Cs indicates that $sup 137$Cs may be valuable as a monitor for $sup 239$,$sup 240$Pu deposition in the sediments. Values of the $sup 238$Pu/$sup 239$,$sup 240$Pu ratio are in agreement with values reported in Lake Ontario sediments (and Lake Michigan plankton) and show little variation with depth. $sup 241$Am data support the concept of in situ production with little preferential mobility after formation. Studies of sedimentary phase distributions show that $sup 239$,$sup 240$Pu is associated with hydrous oxide phases which are chemically stable under the prevailing conditions in lake sediments. Since Lake Michigan sediments remain aerobic, relatively little $sup 239$,$sup 240$Pu is available for chemical mobilization from the hydrous oxide or organic phases present in the sediments. (auth)

Physical Description

14 p.

Notes

Dep. NTIS

Source

  • IAEA international symposium on transuranium nuclides in the environment, San Francisco, California, USA, 17 Nov 1975

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: CONF-751105--9
  • Report No.: SM--199/47
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 4130003
  • Archival Resource Key: ark:/67531/metadc871422

Collections

This article is part of the following collection of related materials.

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.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • January 1, 1975

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

Description Last Updated

  • Oct. 11, 2017, 3:45 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 2

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Edgington, D.N.; Alberts, J.J.; Wahlgren, M.A.; Karttunen, J.O. & Reeve, C.A. Plutonium and americium in Lake Michigan sediments, article, January 1, 1975; Illinois. (digital.library.unt.edu/ark:/67531/metadc871422/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.