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Влияние ОП-7 и ОП-10 на образование салицилфлуороната молибдена (VI)

Authors: Rudenko, E. I.; Zaitseva, M. V.; Tsybulyak, O. D.; Danilina, E. I.;

Влияние ОП-7 и ОП-10 на образование салицилфлуороната молибдена (VI)

Abstract

Спектрофотометрическими методами изучено влияние неионных ПАВ на образование салицилфлуороната молибдена (VI). Показано, что интервалы оптимальной кислотности по соляной кислоте составляют 0,075…0,35 М при использовании ОП-7 и 0,05…0,30 М при использовании ОП-10. Аналитической формой для спектрофотометрического определения молибдена является нейтральный хелат-аддукт с соотношением металл : реагент : ОП-7, равным 1 : 3,5 : 2, который характеризуется хорошо разрешенной полосой поглощения с максимумом при 520 нм и молярным коэффициентом погашения, равным 1,14·105. Градуировочные графики линейны в широком интервале концентраций молибдена для нескольких вариантов определения с использованием ОП-7 и ОП-10, соляной и серной кислот, относительное стандартное отклонение не превышает 0,014. Проведено сравнение полученных вариантов с вариантом спектрофотометрического определения молибдена с использованием катионных ПАВ и желатины. Spectrophotometric methods have been used for the study of non-ionic surfactants influence on formation of molybdenum (VI) salicylfluoronate. It has been shown that the optimal acidity range for hydrochloric acid is 0.075…0.35 M, if OP-7 is used, and 0.05…0.30 M in the presence of OP-10. The analytical form for the spectrophotometric determination of molybdenum is the neutral chelate addition compound with the ratio of metal to reagent to OP-7 equaling 1 : 3.5 : 2, which is characterized by a well-resolved absorption band at 520 nm and molar absorptivity 1.14·105. The calibration graphs are linear in a wide interval of molybdenum concentration, for several modifications of determination, with the use of OP-7 and OP-10, or hydrochloric acid and sulfuric acid, while relative standard deviation does not exceed 0.014. The studied methods have been compared to the spectrophotomeric determination of molybdenum with the use of cationic surfactants and gelatin. Rudenko Eleonora Iosifovna – PhD (Chemistry), Associate Professor, Analytical and Physical Chemistry Subdepartment, Chelyabinsk State University. 129, Br. Kachirinych, Chelyabinsk, 454021. Руденко Элеонора Иосифовна – кандидат химических наук, доцент кафедры аналитической и физической химии, Челябинский государственный университет, 454021, г. Челябинск, ул. Бр. Кашириных, 129. Zaitseva Maria Vyacheslavovna – Undergraduate of Chemical Department, Chelyabinsk State University. 129, Br. Kachirinych, Chelyabinsk, 454021. Зайцева Мария Вячеславовна – студентка химического факультета, Челябинский государственный университет, 454021, г. Челябинск, ул. Бр. Кашириных, 129. Tsybulyak Olga Dimitrievna – Undergraduate of Chemical Department, Chelyabinsk State University. 129, Br. Kachirinych, Chelyabinsk, 454021. Цыбуляк Ольга Димитриевна – студентка Химического факультета, Челябинский государственный университет, 454021, г. Челябинск, ул. Бр. Кашириных, 129. Danilina Elena Ivanovna – PhD (Chemistry), Associate Professor, Analytical Chemistry Subdepatment. South Ural State University. 76, Lenin avenue, Chelyabinsk, 454080. Данилина Елена Ивановна – кандидат химических наук, доцент кафедры аналитической химии, Южно-Уральский государственный университет. 454080, г. Челябинск, пр. им. В.И. Ленина, 76. E-mail: deicu@mail.ru Челябинский государственный университет

Keywords

OP-7, complexation stoichiometry, молибден, спектрофотометрический анализ, УДК 543.422.7, гидрофильные органические растворители, non-ionic surfactants, OP-10, ОП-10, molybdenum, salicylfluorone, ОП-7, hydrophilic organic solvents, стехиометрия комплексообразования, неионные ПАВ, салицилфлуорон, spectrophotometric analysis

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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