Efficient Preconcentration and Separation of Actinide Elements from Large Soil and Sediment Samples

Guebuem Kim, William C. Burnett,* and E. Philip Horwitz
Environmental Radioactivity Measurement Facility, Department of Oceanography, Florida State University, Tallahassee, Florida 32306
Anal. Chem., 2000, 72 (20), pp 4882–4887
DOI: 10.1021/ac000417n
Publication Date (Web): August 31, 2000
Copyright © 2000 American Chemical Society

Abstract

Large (10 g) soil and sediment samples are often required for analysis of low-level man-made actinides for monitoring environmental radioactivity. However, use of large environmental samples often results in significant chemical losses during chemical separations due to matrix interferences. We present a technique based on the ion-exchange resin Diphonix which selectively collects actinides and lanthanides into a common form, which then behaves uniformly and predictably during subsequent separation schemes. Diphonix is attractive for this purpose because it has an extremely high affinity for actinides and a low affinity for most common ions and is resistant to hydrofluoric acid. After being adsorbed onto Diphonix resin in a column mode at a pH 1, actinides are completely eluted with 0.5 M 1-hydroxyethylidenediphosphonic acid (HEDPA). After destruction of the HEDPA by ozonation or use of Fenton's reagent, Am, Pu, U, and Th are separated from each other and the remaining matrix by use of extraction chromatographic resins. We obtained high and consistent chemical recoveries (mean, 85%), as well as excellent chemical separations, for Am, Pu, U, and Th through the entire procedure for several 10-g soil and sediment samples.

Citing Articles

View all 22 citing articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 7 ACS Journal articles (5 most recent appear below).

Tools

SciFinder Links

SciFinder subscribers:  Click to sign in | Not a SciFinder subscriber? Learn more at www.cas.org

Explore by:


History

  • Published In Issue October 15, 2000
  • Received for review April 10, 2000. Accepted July 10, 2000.

Recommend & Share

  • Share on ACS NetworkACS Network
  • Add to FacebookFacebook
  • Tweet ThisTweet This
  • Add to CiteULikeCiteULike
  • Add to NewsvineNewsvine
  • Digg ThisDigg This
  • Add to DeliciousDelicious

Related Content

Other ACS content by these authors: