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Waste Glass Analytical Bias Correction Using a ReferenceStandard Glass

Published online by Cambridge University Press:  03 September 2012

Gary L. Smith ,
Dennis L. Eggett  and
Harry D. Smith
Gary L. Smith
Affiliation:
Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, gl_smith@pnl.gov, dl_eggett@pnl.gov, hd_smith@pnl.gov
Dennis L. Eggett
Affiliation:
Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, gl_smith@pnl.gov, dl_eggett@pnl.gov, hd_smith@pnl.gov
Harry D. Smith
Affiliation:
Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, gl_smith@pnl.gov, dl_eggett@pnl.gov, hd_smith@pnl.gov
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Abstract

Analytical round robins were established to allow laboratories responsiblefor the analysis of (nuclear) wastes glasses to compare their analyticalcapabilities and techniques with one another in a non-competitiveatmosphere. In addition the quality of analyses using different analyticaltechniques on the same materials could be compared. Analytical Round Robin 7had two primary objectives: 1) to evaluate the effect of using the sameanalytical reference glass as a reference standard for bias correctinganalytical results for all the participating laboratories in making theanalyses; and 2) to discuss the analytical methods and results from theparticipating laboratories between the participants for the purpose ofevaluating quality and interlaboratory consistency. This paper willprimarily address the first objective.

The purpose of an analytical reference material is to bring the analyticalresults from various laboratories into better agreement by providing them acommon reference point No reference glass is likely to be ideal for eachelement in the glass being analyzed. Obviously, the closer the referencematerial is to the unknown, the more confidence there will be in the resultsbecause less judgement is called for. Use of the reference glass to biascorrect analytical results for a standard set of analyses from severallaboratories provides the data needed to determine the effectiveness of anAnalytical Reference Glass (ARG) in producing interlaboratory agreement.Concurrently, whether or not the analytical results using ARG-1 are morevalid or systematically biased can be evaluated using standard statisticalmethods. The conclusion is that bias correcting with a standard glass suchas ARG-1 for results obtained by the inductively coupled plasma - atomicemission spectroscopy (ICP-AES) analytical technique produces more accurateresults.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 173
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Smith, G. L. and Marschman, S. C., “Nuclear Waste Analytical Round Robins 1–6 Summary Report,” in Scientific Basis for Nuclear Waste Management XVII. edited by Barkatt, A. and Van Konynenburg, R. A. (Mater. Res. Soc. Proc. 333, Pittsburgh, PA 1993), p. 461–472.Google Scholar
2. American Society for Testing and Materials, Standard C1317–95 titled, “Practice for Dissolution of Silicate or Acid Resistant Matrix Samples” ASTM, West Conshohocken, PA.Google Scholar
3. American Society for Testing and Materials, Standard Cl 342–96 titled, “Practice for Flux Fusion Sample Dissolution” ASTM, West Conshohocken, PA.Google Scholar
4. Jantzen, C. M., Bibler, N. E., Beam, D. C., Crawford, C. L., and Pickett, M. A., “Characterization of the Defence Waste Processing Facility (DWPF) Environmental Assessment (EA) Glass Standard Reference Material (U),” WSRC-TR-92–346, Rev. 1, Westinghouse Savannah River Company, Aiken, SC (1993).10.2172/10173249Google Scholar
5. Smith, G. L., “Characterization of Analytical Reference Glass-1 (ARG-1),” PNL-8992, Pacific Northwest National Laboratory, Richland, WA (1993).10.2172/10115356Google Scholar