Abstract

A cooperative investigation has been performed to test long-term interlaboratory and interinstrumental accuracy and precision of a dc carbon arc optical emission spectrographic method for determining the common trace and minor elements in silicate rocks and minerals. Comparisons are made with determinations by atomic absorption and X-ray fluorescence spectrometric procedures to indicate agreement or bias of the analytical results, and the presence of systematic errors.

Spectrochemical Determination of the Major Constituents of Minerals and Rocks

Aslak Kvalheim
J. Opt. Soc. Am. 37(7) 585-592 (1947)

An X-Ray Spectrograph

John T. Norton
J. Opt. Soc. Am. 13(2) 231-233 (1926)

Measurement of the core diameter of graded-index optical fibers: an interlaboratory comparison

Ernest M. Kim and Douglas L. Franzen
Appl. Opt. 21(19) 3443-3450 (1982)

Interlaboratory measurement comparison to determine the attenuation and bandwidth of graded-index optical fibers

Douglas L. Franzen, G. W. Day, Bruce L. Danielson, George E. Chamberlain, and Ernest M. Kim
Appl. Opt. 20(14) 2412-2419 (1981)

Measurements of Spectral Emission and Absorption of a High Pressure Xenon Arc in the Stationary and the Flashed Modes

Lothar Klein
Appl. Opt. 7(4) 677-685 (1968)