Results of the U.S. Geological Survey's analytical evaluation program for standard reference samples distributed in March 2003
Open-File Report
2003-261
By: Mark T. Woodworth and Brooke F. Connor
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Abstract
This report presents the results of the U.S. Geological Survey's analytical evaluation program for six standard reference samples -- T-173 (trace constituents), M-166 (major constituents), N-77 (nutrient constituents), N-78 (nutrient constituents), P-40 (low ionic-strength constituents), and Hg-36 (mercury) -- that were distributed in March 2003 to laboratories enrolled in the U.S. Geological Survey sponsored interlaboratory testing program. Analytical data received from 110 laboratories were evaluated with respect to overall laboratory performance and relative laboratory performance for each analyte in the six reference samples. Results of these evaluations are presented in tabular form. Also presented are tables and graphs summarizing the analytical data provided by each laboratory for each analyte in the six standard reference samples. The most probable value for each analyte was determined using nonparametric statistics.
Suggested Citation
Woodworth, M.T., Connor, B.F., 2003, Results of the U.S. Geological Survey's analytical evaluation program for standard reference samples distributed in March 2003: U.S. Geological Survey Open-File Report 2003-261, iv, 109 p. : ill. ; 28 cm., https://doi.org/10.3133/ofr03261.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Results of the U.S. Geological Survey's analytical evaluation program for standard reference samples distributed in March 2003 |
| Series title | Open-File Report |
| Series number | 2003-261 |
| DOI | 10.3133/ofr03261 |
| Year Published | 2003 |
| Language | ENGLISH |
| Contributing office(s) | Standard Reference Sample Project- Branch of Quality Systems |
| Description | iv, 109 p. : ill. ; 28 cm. |
| Time Range Start | 2003-03-01 |
| Time Range End | 2003-03-30 |