Abstract

The major problems associated with the spectrographic analysis of biological samples are 1) the methods of sampling, 2) the preparation of the samples for analysis, and 3) the selection of a satisfactory spectrographic technique. The latter two are not independent considerations. For example, an oxidation procedure yielding sulfate solutions could not be combined conveniently with the copper spark technique in as much as sulfate solutions cannot be evaporated on copper electrodes without undue oxidation effects.

Sampling, Mixing, and Grinding Techniques in the Preparation of Samples for Quantitative Analysis by X-Ray Diffraction and Spectrographic Methods*1

James W. Ballard, H. I. Oshry, and H. H. Schrenk
J. Opt. Soc. Am. 33(12) 667-675 (1943)

Preparation of Purified Inorganic Compounds for Use in Spectrographic Standards*

Ray C. Hughes
J. Opt. Soc. Am. 33(1) 49-60 (1943)

Spectrographic Procedure for Analysis of Powdered Samples of Unknown Origin

H. E. Biber and S. Levy
J. Opt. Soc. Am. 47(5) 381-385 (1957)

Wide Range Analysis for Zinc Using Spectrographic Line Widths

E. John Eastmond and Bernice E. Williams
J. Opt. Soc. Am. 38(9) 800-803 (1948)

The Quantitative Spectrographic Analysis of the Rare Earth Elements*I. Determination of Samarium in NeodymiumII. Determination of Europium in Samarium

Velmer A. Fassel and Harley A. Wilhelm
J. Opt. Soc. Am. 38(6) 518-526 (1948)