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Short Reports • J. Braz. Chem. Soc. 21 (6) • 2010 • https://doi.org/10.1590/S0103-50532010000600024   copy

Application of a purge-and-trap system for fixed-NH4+ determination by matrix interference free ion chromatography in oil reservoir rocks

Authorship SCIMAGO INSTITUTIONS RANKINGS

A method for fixed-NH4+ determination using a system immersed into an ultrasonic bath for NH3 extraction and ion chromatography for NH4+ determination is proposed. The method is faster, simpler and more sensible (LOD = 4.4 mg g-1 NH4+) than the classical Kjeldahl method.

fixed-ammonium; sandstone; ion chromatography; ultrasound-assisted purge-and-trap system

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