Abstract
AbstractSoil‐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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