Determination of Nitrate in Soil by Digital Colorimetry

Авторы: Garmay A.V., Monogarova O.V., Oskolok K.V., Radzikovitskii P.M.
Журнал: Moscow University Chemistry Bulletin
Том: 80
Номер: 1
Год издания: 2025
Издательство: Allerton Press Inc.
Местоположение издательства: United States
Первая страница: 53
Последняя страница: 60
DOI: 10.3103/S0027131424700494
Аннотация: A method for the determination of nitrate in soil with digital colorimetry is proposed. This approach is based on photometric methods for the determination of nitrates after extraction with potassium chloride from soil samples. The original method for determining nitrate as an azo dye (a product of the azocoupling reaction of 1-naphthylamine and sulfanilamide) is modified to achieve higher sensitivity and accuracy of colorimetric determination. This approach provides the metrological characteristics of the digital colorimetric method that are similar to spectrophotometric ones. The adequacy of the proposed method is confirmed by analyzing standard samples and soil samples collected in the Moscow Region.
Добавил в систему: Моногарова Оксана Викторовна

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