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Название: Simultaneous spectrophotometric determination of chromium (VI) and iron (III) in alloys
Авторы: Larionova, Ekaterina Vladimirovna
Bulygina, K. A.
Ключевые слова: хром; железо; сплавы; спектрофотометрическое определение
Дата публикации: 2015
Издатель: IOP Publishing
Библиографическое описание: Larionova E. V. Simultaneous spectrophotometric determination of chromium (VI) and iron (III) in alloys / E. V. Larionova, K. A. Bulygina // IOP Conference Series: Materials Science and Engineering. — 2015. — Vol. 81 : Radiation-Thermal Effects and Processes in Inorganic Materials : International Scientific Conference, 3-8 November 2014, Tomsk, Russia : [proceedings]. — [012093, 6 p.].
Аннотация: In this work the possibility of simultaneous spectrophotometric determination of chromium (VI) and iron (III) in alloys with help of the mixed organic reagents (diphenylcarbazide and 1,10-phenanthroline, diphenylcarbazide and sulphosalicylic acid) is studied. We have applied curve fitting method to separate individual signals of chromium (VI) and iron (III) from overlapped absorption spectrum. Peak shape analysis of pure signals of complexes of chromium (VI) with diphenylcarbazide and iron (III) with the 1,10-phenanthroline and sulphosalicylic acid is previously carried out. For adequate application of curve fitting method we chose the optimal empirical models of signals taking into account preliminary information on their shape. Correctness of determination of concentration by means of the offered technique is proved by "added-found" method for a series of mixtures with different ratios of concentration of chromium (VI) and iron (III). It is founded that the error of determination of concentration doesn't exceed 11%.
URI: http://earchive.tpu.ru/handle/11683/14736
Располагается в коллекциях:Материалы конференций

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