Cooperative investigation of precision and accuracy in chemical analysis of silicate rocks
Analytical Chemistry
By: W.G. Schlecht
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Abstract
This is the preliminary report of the first extensive program ever organized to study the analysis of igneous rocks, a study sponsored by the United States Geological Survey, the Massachusetts Institute of Technology, and the Geophysical Laboratory of the Carnegie Institution of Washington. Large samples of two typical igneous rocks, a granite and a diabase, were carefully prepared and divided. Small samples (about 70 grams) of each were sent to 25 rock-analysis laboratories throughout the world; analyses of one or both samples were reported by 34 analysts in these laboratories. The results, which showed rather large discrepancies, are presented in histograms. The great discordance in results reflects the present unsatisfactory state of rock analysis. It is hoped that the ultimate establishment of standard samples and procedures will contribute to the improvement of quality of analyses. The two rock samples have also been thoroughly studied spectrographically and petrographically. Detailed reports of all the studies will be published.
Suggested Citation
Schlecht, W., 1951, Cooperative investigation of precision and accuracy in chemical analysis of silicate rocks: Analytical Chemistry, v. 23, no. 11, p. 1568-1571, https://doi.org/10.1021/ac60059a014.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Cooperative investigation of precision and accuracy in chemical analysis of silicate rocks |
| Series title | Analytical Chemistry |
| DOI | 10.1021/ac60059a014 |
| Volume | 23 |
| Issue | 11 |
| Publication Date | May 01, 2002 |
| Year Published | 1951 |
| Language | English |
| Publisher | ACS Publications |
| Description | 4 p. |
| First page | 1568 |
| Last page | 1571 |