Actions for {sup 129}I Interlaboratory comparison [electronic resource] : phase I and phase II.

Email RIS file
Bookmark
Report an Issue

{sup 129}I Interlaboratory comparison [electronic resource] : phase I and phase II.

Published
Washington, D.C : United States. Dept. of Energy. Office of the Assistant Secretary for Defense Programs, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
155 Kilobytes pages : digital, PDF file
Additional Creators
Lawrence Livermore National Laboratory, United States. Department of Energy. Office of the Assistant Secretary for Defense Programs, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
An interlaboratory comparison exercise for ¹²⁹I was organized and conducted. Nine laboratories participated in the exercise to either a full or limited extent. In Phase I of the comparison, 11 samples were measured. The suite of samples contained both synthetic ''standard type'' materials (i.e., AgI) and environmental materials. The isotopic ¹²⁹I/¹²⁷I ratios of the samples varied from 10{sup −8} to 10{sup −14}. In this phase, each laboratory was responsible for its own chemical preparation of the samples. In Phase I, the ¹²⁹I AMS measurements for prepared AgI were in good agreement. However, large discrepancies were seen in ¹²⁹I AMS measurements of environmental samples. Because of the large discrepancies seen in the Phase I ¹²⁹I intercomparison, a subsequent study was conducted. In Phase II of the ¹²⁹I intercomparison, three separate laboratories prepared AgI from two environmental samples (IAEA 375 soil and maples leaves). Each laboratory used its own chemical preparation method with each of the methods being distinctly different. The resulting six samples (two sets of three) were then re-distributed to the participating ¹²⁹I AMS facilities and ¹²⁹I/¹²⁷I ratios measured. Results and discussion of both the Phase I and Phase II interlaboratory comparison are presented.
Report Numbers
E 1.99:ucrl-jc-128218
E 1.99: yn0100000
yn0100000
ucrl-jc-128218
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
09/30/1999.
"ucrl-jc-128218"
" yn0100000"
"YN0100000"
8th International Conference on Accelerator Mass Spectrometry, Vienna (AT), 09/06/1999--09/10/1999.
Roberts, M L; Caffee, M W.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14138699