SU1280540A1 - Method of determining vanadium (iv) - Google Patents
Method of determining vanadium (iv) Download PDFInfo
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- SU1280540A1 SU1280540A1 SU853871172A SU3871172A SU1280540A1 SU 1280540 A1 SU1280540 A1 SU 1280540A1 SU 853871172 A SU853871172 A SU 853871172A SU 3871172 A SU3871172 A SU 3871172A SU 1280540 A1 SU1280540 A1 SU 1280540A1
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Abstract
Насто щее изобретение относитс к области аналитической химии, именно к способам титриметрического определени ванади (V) в щелочной среде, и может быть использован при анализе различных объектов, в частности натрий-ванадиевых бронз. После растворени пробы аликвоту полученного раствора The present invention relates to the field of analytical chemistry, namely to methods for the titrimetric determination of vanadium (V) in an alkaline medium, and can be used in the analysis of various objects, in particular sodium-vanadium bronzes. After dissolving the sample, an aliquot of the resulting solution
Description
Изобретение относитс к аналитической химии, в частности к способам титриметрического определени ванади (IV) в щелочной среде, и может быть использовано дл анализа различных 5 объектов, в частности,, в натрий-ванадиевых бронзах.The invention relates to analytical chemistry, in particular, to methods for the titrimetric determination of vanadium (IV) in an alkaline medium, and can be used to analyze various 5 objects, in particular, in sodium-vanadium bronzes.
Цель изобретени - повышение чув-г- ствктельности, избирательности и ускорение анализа,The purpose of the invention is to increase the chu-g-structure, selectivity and acceleration of the analysis,
Пример 1. Методика титриметрического определени ванади (IV) в чистых растворах,Example 1. Technique for the titrimetric determination of vanadium (IV) in pure solutions,
В коническую колбу вместимостью 100 мл внос т 10 мл 1-6 М раствора гидроксида натри , аликвоту стандартного раствора ванади сульфата (0,01- 0,5 М раствора VOSO), добавл ют 3- 5 капель 0,1%-ного водно-содового раные методом математической статистики , представлены в табл,1-.In a 100 ml conical flask, add 10 ml of a 1-6 M solution of sodium hydroxide, an aliquot of a standard vanadium sulfate solution (0.01-0.5 M VOSO solution), add 3-5 drops of 0.1% water. soda wounds by the method of mathematical statistics are presented in Table 1-.
Сравнение полученных результатов свидетельствует о точности и хорошей воспроизводимости титриметрического способа определени ванади (IV) с 5-сульфамидо-2 -метокси-Ы-фенилантра ниловой кислотой.Comparison of the obtained results testifies to the accuracy and good reproducibility of the titrimetric method for determining vanadium (IV) with 5-sulfamido-2-methoxy-N-phenylanthr by nilic acid.
Исследовано вли ние щелочности среды на результат определени ванади (IV) с новым индикатором (табл, 2The effect of the alkalinity of the medium on the result of the determination of vanadium (IV) with a new indicator was studied (Table 2
Как видно из представленных данных титриметрическое определение ванади с наименьшей ошибкой ведут в среде 1-6 М гидроксида натри .As can be seen from the data presented, the titrimetric determination of vanadium with the smallest error is carried out in a medium of 1-6 M sodium hydroxide.
Установлен интервал концентраций растворов феррицианида кали , в кот ром обеспечиваетс титрование с наименьшей ошибкой. Зависимость резульствора 5-сульфамидо-2 -метокси-Н-фе- татов титриметрического определени The concentration range of potassium ferricyanide solutions was established, in which the titration was performed with the least error. Dependence of the 5-sulfamido-2-methoxy-H-tetrimetric titrimetric determination reaction
ванади (IV) от концентрации (СЫ , ,95 представлена в табл,3, Полученные результаты свидетельсvanadium (IV) on concentration (СУ,, 95 is presented in table, 3, The obtained results testify
нилантранилов ой, кислоты. Смесь титруют 0,01-0,5 М раствором феррицианида кали (соответственно мол рности раствора ванади сульфата). Переход ок-. вуют, что лучший переход и наименьша nilantranil oh, acid. The mixture is titrated with 0.01-0.5 M solution of potassium ferricyanide (according to the molarity of the vanadium sulfate solution). Transition approx. they say that the best transition and the least
30thirty
раски четкий контрастный от одной капли титранта от бесцветного к красному ,clear contrasting from one drop of titrant from colorless to red,
Пример2, Определение ванади (IV) в натрий-ванадиевых бронзах.Example 2, Determination of vanadium (IV) in sodium vanadium bronzes.
Точные навески бронз ( (0,2 г) раствор ли в 30 мл 10%-ного ра.створа. гидроксида натри . Раствор доводили до общего объема 100 мл, В конические колбы вместимостью 100 мл помещают 10 мл 1-6 М раствора гидроксида нат- ри , аликвоту раствора бронз (1-5 мл), 3-5 капель 0,1%-ного раствора индикатора и титруют 0,1 М раствором феррицианида кали до перехода окраскиPrecise weights of bronze ((0.2 g) were dissolved in 30 ml of 10% dilute sodium hydroxide. The solution was made up to a total volume of 100 ml. 10 ml of a 1-6 M solution of sodium hydroxide were placed in conical flasks with a capacity of 100 ml. - ri, an aliquot of bronze solution (1-5 ml), 3-5 drops of a 0.1% indicator solution and titrated with 0.1 M potassium ferricyanide solution until the color transition
4040
ошибка наблюдаетс в диапазоне концентраций феррицианида кали от 0,01 до 0,5 М растворов.an error is observed in the range of potassium ferricyanide concentrations from 0.01 to 0.5 M solutions.
Сравнительные данные предлагаемого способа с прототипом (редоксал), базовым объектом (перманганатный) приведены в табл,4,Comparative data of the proposed method with the prototype (redox), the basic object (permanganate) are given in table., 4,
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SU853871172A SU1280540A1 (en) | 1985-02-13 | 1985-02-13 | Method of determining vanadium (iv) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100580450C (en) * | 2007-11-30 | 2010-01-13 | 攀钢集团攀枝花钢铁研究院 | Method for eliminating error in vanadium determination by ammonium ferrous sulfate volumetric method |
-
1985
- 1985-02-13 SU SU853871172A patent/SU1280540A1/en active
Non-Patent Citations (1)
Title |
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Музгин В,Н. и др. Аналитическа хими ванади . М.: Наука, 1981, с. 66-71. Фрумина B.C. Мустафин И.С. Способ определени ванади (IV) в щелочной среде, - Аналитическа хими , I960, т.15, № 6, с.671-675. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100580450C (en) * | 2007-11-30 | 2010-01-13 | 攀钢集团攀枝花钢铁研究院 | Method for eliminating error in vanadium determination by ammonium ferrous sulfate volumetric method |
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