Abstract

In this paper, a new approach to the internal standard method has been done in which it was found satisfactory to construct only one working curve for any element at a constant concentration of the internal standard. A correction factor is applied to the result to compensate for the additional amounts of the internal standard element added to the samples to raise its concentration up to a constant value. This method is relatively rapid, economic, and reproducible. Standard deviations of ±1.5, ±3.2, and ±8.8% were reported for duplicate determinations of cobalt, manganese, and chromium, respectively, in oil ashes.

The International Length Standard

K. M. Baird and L. E. Howlett
Appl. Opt. 2(5) 455-463 (1963)

Spectrochemical Analysis of Ceramics and Other Non-Metallic Materials*

Edwin K. Jaycox
J. Opt. Soc. Am. 37(3) 162-165 (1947)

Reproducibility of the International Standard of Light

Ray P. Teele
J. Opt. Soc. Am. 52(7) 826-827 (1962)

International Comparison of Working Standards for Colorimetry

A. R. Robertson and W. D. Wright
J. Opt. Soc. Am. 55(6) 694-706 (1965)

International round-robin experiment to test the International Organization for Standardization total-scattering draft standard

Puja Kadkhoda, Arno Müller, Detlev Ristau, Angela Duparré, Stefan Gliech, Hans Lauth, Uwe Schuhmann, Norbert Reng, Markus Tilsch, Ranier Schuhmann, Claude Amra, Carole Deumie, Christoph Jolie, Helmut Kessler, Tomas Lindström, Carl-Gustaf Ribbing, and Jean M. Bennett
Appl. Opt. 39(19) 3321-3332 (2000)