SU142803A1 - Method for quantitative determination of ferric iron - Google Patents
Method for quantitative determination of ferric ironInfo
- Publication number
- SU142803A1 SU142803A1 SU699409A SU699409A SU142803A1 SU 142803 A1 SU142803 A1 SU 142803A1 SU 699409 A SU699409 A SU 699409A SU 699409 A SU699409 A SU 699409A SU 142803 A1 SU142803 A1 SU 142803A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- iron
- ferric iron
- quantitative determination
- solution
- solutions
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
Известные объемные и колориметрические методы непосредственного определени железа в растворах часто оказываютс неприемлемыми при наличии 3 этих растворах окрашенных катионов (Сг, Си, CoNi и др.), маскирующих анионов (фторид, фосфат, оксалат, цитратион и др.), а также при определении следов железа в растворах с большим содержанием солей других металлов.The known volumetric and colorimetric methods for direct determination of iron in solutions are often unacceptable if there are 3 of these solutions of colored cations (Cr, Cu, CoNi, etc.), masking anions (fluoride, phosphate, oxalate, citration, etc.), as well as in determining traces of iron in solutions with a high content of salts of other metals.
Дл определени железа в таких растворах его необходимо предварительно выделить, дл чего примен ют методы осаждени и методы избирательной экстракции.To determine iron in such solutions, it is necessary to first isolate it, for which methods precipitation and selective extraction methods are used.
Известны способы выделени железа из растворов по ходу анализа методом избирательной экстракции с применением в качестве экстрагентов, например, раствора ацетилацетона в хлороформе, раствора бензоата натри , диизопропилового эфира, раствора 8-оксихинолина в хлороформе, растзора роданистого натри и др., в некоторых случа х с последующей реэкстракцией водой. Из литературных данных также известно, что алкилфосфориые кислоты хорошо экстрагируют трехвалентное железо и незначительно двухвалентное железо.Methods are known for isolating iron from solutions in the course of analysis by selective extraction using, for example, acetylacetone in chloroform, sodium benzoate solution, diisopropyl ether, 8-hydroxyquinoline solution in chloroform, sodium chloride, etc., as extractants. followed by stripping with water. It is also known from the literature that alkyl phosphoric acids extract well ferric iron and slightly bivalent iron.
Отличительной особенностью описываемого нового способа количественного определени трехвалентного железа путем экстракции его из растворов органическими растворител ми с последующей реэкстракцией вл етс то, что, с целью повышени точности анализа, экстракцию железа производ т раствором диизоамилортофосфорной кислоты в бензоле, а реэкстракцию - раствором соединений трехвалентного титана, с последуюшим определением железа известными приемами.A distinctive feature of the described method for quantitative determination of ferric iron by extracting it from solutions with organic solvents followed by reextraction is that, in order to improve the accuracy of the analysis, iron is extracted with a solution of diisoamyl phosphoric acid in benzene, and reextraction with a solution of trivalent titanium compounds, with the subsequent determination of iron by known methods.
Пример. 10,0 мл анализируемого кислого или нейтрального раствора, содержащего не более 5 г/л Ре2Оз и не более 1 -1,5 эквизалента на литр свободной сильной минеральной кислоты, помещают Б делительную воронку емкостью 30-40 мл. К раствору добавл ют 1 мл концентрированной, например. Юн. НС1 (или Юн. HNOa при наличии в растворе солей свинца или серебра) и 10-12 мл 1н.бензольExample. 10.0 ml of the analyzed acidic or neutral solution containing not more than 5 g / l of Pe2Oz and not more than 1 -1.5 equivalents per liter of free strong mineral acid are placed in a separating funnel with a capacity of 30-40 ml. To the solution is added 1 ml of concentrated, for example. Yun HC1 (or Yun. HNOa in the presence of lead or silver salts in the solution) and 10-12 ml of 1N benzene
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU699409A SU142803A1 (en) | 1961-02-27 | 1961-02-27 | Method for quantitative determination of ferric iron |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU699409A SU142803A1 (en) | 1961-02-27 | 1961-02-27 | Method for quantitative determination of ferric iron |
Publications (1)
Publication Number | Publication Date |
---|---|
SU142803A1 true SU142803A1 (en) | 1961-11-30 |
Family
ID=48298624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU699409A SU142803A1 (en) | 1961-02-27 | 1961-02-27 | Method for quantitative determination of ferric iron |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU142803A1 (en) |
-
1961
- 1961-02-27 SU SU699409A patent/SU142803A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Krishen et al. | Acetylacetone as analytical extraction reagent | |
RO85712B (en) | Process for extracting uranium from acid phosphoric solutions | |
SU142803A1 (en) | Method for quantitative determination of ferric iron | |
Finston et al. | The effect of SCN− on the extraction of Fe (III)-TTA | |
ES440383A2 (en) | A method of leaching security copper copper values. (Machine-translation by Google Translate, not legally binding) | |
JPS5713108A (en) | Method for separating trivalent iron from aqueous acidic solution | |
FR2405732A1 (en) | YTTRIUM ION SEPARATION PROCESS | |
GB1051521A (en) | Improvements in or relating to a process for the production of substantially iron free aqueous solution of phosphoric acid | |
RU2602112C1 (en) | Method for extraction of lanthanum(iii) from salt solutions | |
Kirichenko et al. | Extraction of antimony and tantalum from aqueous fluoride solutions by n-octanol and tributyl phosphate | |
FR2169167A1 (en) | Removal of monobasic acids from aqs metal salt solns - - using organic reagents which form adducts with the acids | |
ES336087A1 (en) | Purification procedure of phosphoric acid. (Machine-translation by Google Translate, not legally binding) | |
ES395270A1 (en) | Handling of raffinates from wet phosphoric acid purification | |
FR2287517A1 (en) | PROCESS FOR EXTRACTING URANIUM FROM SULFURIC LEACHING SOLUTION BY MEANS OF ION EXCHANGING RESINS | |
Singh et al. | Liquid-liquid extraction of Th 4+ and UO 2 2+ by LIX-26 and its mixtures | |
SU406157A1 (en) | ||
Sekine | Separation and spectrophotometric determination of uranium (VI) by extraction with arsenazo III and zephiramine | |
SU420912A1 (en) | METHOD OF EXTRACTION-PHOTOMETRIC DETERMINATION OF BISMUTH | |
SU789394A1 (en) | Method of vanadium (iv) extraction | |
SU1063780A1 (en) | Method for separating hafnium and zirconium by extraction | |
SU1693438A1 (en) | Mixture for extraction of cesium from aqueous nitrate solutions | |
ES464827A1 (en) | Process for the preparation of copper values from aqueous solutions | |
SU441313A1 (en) | Method of extracting copper from acidic aqueous solutions and pulps by extraction | |
SU273932A1 (en) | Method for extraction separation of tungsten and molybdenum | |
Wroński | Preconcentration of cyanide from water by extraction with tributyltin hydroxide |