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Andrei V. Garmay, Kirill V. Oskolok, Oksana V. Monogarova, Stepan N. Chichulin
Colorimetric
determination of ammonium in soils samples
Abstract
Abstract. A technique for determining ammonium as an indophenolic dye in soil
samples by digital colorimetry using household optical means of obtaining
raster images is proposed. The developed approach is based on photometric
methods for determining ammonium after extraction with potassium chloride from
the soil. This technique provides accuracy and sensitive digital colorimetric
techniques close to spectrophotometric ones. The adequacy of the proposed
approach was confirmed by analyzing standard samples and soil samples collected
in the districts of the Moscow region.
Key words: ammonium, soil, digital colorimetry, office flatbed photoscanner
Copyright (C) Chemistry Dept., Moscow State University, 2002
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