SU1562853A1 - Method of determining germanium - Google Patents
Method of determining germanium Download PDFInfo
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- SU1562853A1 SU1562853A1 SU884413331A SU4413331A SU1562853A1 SU 1562853 A1 SU1562853 A1 SU 1562853A1 SU 884413331 A SU884413331 A SU 884413331A SU 4413331 A SU4413331 A SU 4413331A SU 1562853 A1 SU1562853 A1 SU 1562853A1
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- germanium
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- sulfuric acid
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Abstract
Изобретение относитс к спектрофотометрическим способам определени германи и позвол ет повысить чувствительность анализа. К анализируемому раствору добавл ют молибдат аммони , сол ную кислоту, раствор аскорбиновой кислоты и воду, нагревают на вод ной бане, после охлаждени добавл ют серную кислоту, охлажденную до 0 - 10°С, и хромпиразол, выдержанный предварительно при 0 - 10°С в течение 7 - 10 сут. Соединение германи экстрагируют смесью толуола с ацетоном, отдел ют водную фазу и в органической определ ют содержание германи спектрофотометрическим методом. Мол рный коэффициент поглощени 4,5.105, предел обнаружени 0,8 мкг GE/л. 1 табл.The invention relates to spectrophotometric methods for the determination of germanium and allows an increase in the sensitivity of the assay. Ammonium molybdate, hydrochloric acid, ascorbic acid solution and water are added to the analyzed solution, heated in a water bath, after cooling, sulfuric acid, cooled to 0–10 ° C, and chromium pyrazole, previously preserved at 0–10 ° C within 7 - 10 days. The germanium compound is extracted with a mixture of toluene and acetone, the aqueous phase is separated and the organic content of the germanium is determined by a spectrophotometric method. The molar absorption coefficient is 4.5 . 10 5 , detection limit 0.8 µg GE / l. 1 tab.
Description
Изобретение относитс к аналитической химии, а именно к спектрофото- метрическим способам определени германи .This invention relates to analytical chemistry, in particular to spectrophotometric methods for the determination of germanium.
Цель изобретени - повышение чувствительности анализа.The purpose of the invention is to increase the sensitivity of the analysis.
Пример. В мерную колбу на 50 мл ввод т О,1 мл стандартного раствора германи (2 мкг/мл диоксида германи ), добавл ют 1 мл 0,13% раствора молибдата аммони , 3 мл 1 М сол ной кислоты, 1 мл 0,3% раствора аскорбиновой кислоты и поду до 20-30 мл. Раствор нагревают на вод ной бане в течение 20 мин. После охлаждени разбавл ют до метки 3 М раствором серной кислоты, охлажденной до 5 С, ввод т 1 мл раствора хромпи- разола, предварительно выдержанного при 5°С в течение 8 сут. Смесь перенос т в делительную воронку на 100 мл, добавл ют 5 мл смеси толуола с ацетоном 1:1 и встр хивают в течение 2 мин. Отдел ют водную фазу, к органической фазе добавл ют 5 мл ацетона и определ ют количественное содержание германи спектрофотометрическим методом при 590 нм в I см кювете. Найдено 0,20±0,02 мкг/мл.Example. O, 1 ml of a standard germanium solution (2 µg / ml of germanium dioxide) was introduced into a 50 ml volumetric flask, 1 ml of 0.13% ammonium molybdate solution, 3 ml of 1 M hydrochloric acid, 1 ml of 0.3% were added. solution of ascorbic acid and feed to 20-30 ml. The solution is heated in a water bath for 20 minutes. After cooling, it is diluted to the mark with a 3 M solution of sulfuric acid cooled to 5 ° C, and 1 ml of chromium pyrol solution, previously aged at 5 ° C for 8 days, is added. The mixture is transferred to a 100 ml separatory funnel, 5 ml of a mixture of toluene and acetone 1: 1 are added and shaken for 2 minutes. The aqueous phase is separated, 5 ml of acetone is added to the organic phase and the quantitative content of germanium is determined by a spectrophotometric method at 590 nm in an I cm cuvette. Found 0.20 ± 0.02 µg / ml.
В таблице приведены значени мол рного коэффициента поглощени () в зависимости от температуры охлаждени и времени выдержки хромпиразола и и серной кислоты.The table shows the values of the molar absorption coefficient () depending on the cooling temperature and the exposure time of chrompyrazole and sulfuric acid.
Мол рный коэффициент поглощени 4,5- 10УЧувствительность способа 1 мкг Ge/л.The molar absorption coefficient is 4.5 to 10 Sensitivity of the method 1 µg Ge / l.
ЈJ
№No
00 СП00 SP
СОWITH
Мол рный коэффициент поглощени известного способа 2,6-10, чувствительность 6 мкг Ge/лMolar absorption coefficient of the known method is 2.6-10, sensitivity 6 µg Ge / l
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884413331A SU1562853A1 (en) | 1988-04-20 | 1988-04-20 | Method of determining germanium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884413331A SU1562853A1 (en) | 1988-04-20 | 1988-04-20 | Method of determining germanium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1562853A1 true SU1562853A1 (en) | 1990-05-07 |
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ID=21369956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU884413331A SU1562853A1 (en) | 1988-04-20 | 1988-04-20 | Method of determining germanium |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1562853A1 (en) |
-
1988
- 1988-04-20 SU SU884413331A patent/SU1562853A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Марченко 3. Фотометрическое определение элементов. М.: Мир, 1971, с, 158. Авторское свидетельство СССР № 1460701, кл. G 01 N 31/22, 1986. * |
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