Sulfur Determination in Soil Extracts by an Indirect Atomic Absorption Spectrophotometric Method

Galindo, G. G.; Appelt, H.; Schalscha, E. B.

Sulfur Determination in Soil Extracts by an Indirect Atomic Absorption Spectrophotometric Method

1969

Galindo, G. G. | Appelt, H. | Schalscha, E. B.

Soil-sulfur in Volcanic-ash derived soils was determined in soil extracts. The sulfur extracted was transformed into sulfate ions and organic matter destroyed by means of a 30% H₂O₂ solution. Sulfate ions were precipitated with a 15% BaCl₂ solution and the precipitate then dissolved in (NH₄)₂ EDTA, and Barium determined by Atomic Absorption Spectrophotometry. Sulfur recovery was ascertained using an internal standard.

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