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Abstract

 

This article in SSSAJ

  1. Vol. 26 No. 1, p. 19-23
     
    Received: Jan 18, 1961
    Accepted: Feb 6, 1961


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doi:10.2136/sssaj1962.03615995002600010006x

A Spectrographic Method for Total Analysis of Soils1

  1. M. S. Wang,
  2. L. T. Kurtz and
  3. S. W. Melsted2

Abstract

Abstract

Spectrographic methods for total analysis of soils usually are complicated because of wide variation in constituents, crystal structures and particle sizes. In order to minimize such difficulties, a quick fusion technique employing lithium tetraborate as flux was developed. After fusion, the hot material was quenched for easy removal, then cooled, powdered, and mixed with graphite for briquetting. Rotating the briquets during excitation gave better sensitivity and reproducibility than stationary electrode methods. The uniarc, instead of ordinary d-c. arc or spark, was very satisfactory as an excitation source. A germanium dioxide internal standard was used. The proposed method is fast and accurate for determination of Si, Al, Fe, Ca, Mg, Mn, Ti, Zr, Sr, and Ba.

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