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Updated: Jun 28, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
Published on: May 15, 2015
Supercritical fluid extraction of high sulfur soils, with use of a copper scavenger
Abstract:
Supercritical fluid extraction (SFE) of sulfur-containing soils and sediments was hindered by deposition of elemental sulfur in the restrictor stopping the flow of carbon dioxide. It was found that a copper scavenger column placed after the sample cell removed the elemental sulfur, making SF extraction and quantification possible. Conditions are described for SFE and analysis of two standard reference materials (SRM), with use of a copper scavenger column. Quantification was performed by gas chromatography with mass spectrometric detection and the results were compared with the certified SRM values.
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