Kinetic spectrophotometric determination of hydroxylamine and nitrite ion in a mixture by their reactions with neutral red
Автор: Danilina E.I., Buskina K.A.
Журнал: Вестник Южно-Уральского государственного университета. Серия: Химия @vestnik-susu-chemistry
Рубрика: Аналитическая химия
Статья в выпуске: 4 т.9, 2017 года.
Бесплатный доступ
Kinetic determination of hydroxylamine in soils by the initial rate method is based upon the reaction of neutral red with the nitrite ion, produced by oxidation of hydroxylamine with iodate in acidic media. The optimal conditions for determination are as follows: 0.3 mol L-1 H2SO4, 0.024 mol L-1 KIO3, 6.92×10-5 mol L-1 neutral red. Hydroxylamine can also be determined in mixtures with nitrite ion, if the nitrite content has been found separately at the same conditions without iodate. The calibration graphs are linear in the range (3-27) μmol L-1 of NH2OH and (4-46) μmol L-1 of NO2-. The reproducibility errors are 3.3 % and 1.8%, the relative errors of determination prove to be 2.6 % and 2.1 %, for hydroxylamine and nitrite ion, respectively.
Hydroxylamine, nitrite ion, kinetic analysis, initial rate method, neutral red, iodate ion, soil analysis
Короткий адрес: https://sciup.org/147160408
IDR: 147160408 | DOI: 10.14529/chem170401
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