SU421926A1 - KINETIC WAY TO DETERMINE LEAD - Google Patents
KINETIC WAY TO DETERMINE LEADInfo
- Publication number
- SU421926A1 SU421926A1 SU1737226A SU1737226A SU421926A1 SU 421926 A1 SU421926 A1 SU 421926A1 SU 1737226 A SU1737226 A SU 1737226A SU 1737226 A SU1737226 A SU 1737226A SU 421926 A1 SU421926 A1 SU 421926A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- lead
- kinetic
- ions
- determined
- determine lead
- Prior art date
Links
Description
1one
Изобретение относитс к аналитической химии .This invention relates to analytical chemistry.
Известен способ определени свинца по его каталитическому действию на реакцию гидролиза этилового эфира цистеина в щелочном растворе. Чувствительность определени свинца известным способом 1 мкг/мл.A known method for determining lead by its catalytic effect on the reaction of hydrolysis of cysteine ethyl ester in an alkaline solution. The sensitivity of the determination of lead in a known manner is 1 µg / ml.
С целью повышени чувствительности анализа предлагаетс использовать электрохимическую реакцию анодного окислени ионов трехвалентного хрома. Образующеес при этом количество ионов щестивалентного хрома определ ют титрованием.In order to increase the sensitivity of the analysis, it is proposed to use the electrochemical reaction of anodic oxidation of trivalent chromium ions. The amount of ions of generic chromium formed in this case is determined by titration.
Предлагаемый способ не требует предварительных операций по маскированию или отделению различных примесей.The proposed method does not require preliminary operations for masking or separating various impurities.
Чувствительность определени 0,05 мкг/мл свинца.The detection sensitivity is 0.05 µg / ml lead.
Пример. Стандартный раствор, содержащий 10 г/л Сг+з, готов т путем растворени электролитического хрома высокой чистоты в серной кислоте марки «хг.Example. A standard solution containing 10 g / l Cg + 3 is prepared by dissolving electrolytic chromium of high purity in sulfuric acid of mark ".
В приготовленный электролит ввод т часть анализируемого раствора с содержанием свинца в пределах до 2 мкг/мл, что определ етс растворимостью сульфата свинца. Затем ведут электролиз в течение 1 час в чейке с диафрагмой и емкостью анодного пространства 100-300 мл на платиновом дисковом аноде, вращающемс с посто нной скоростью 400 об/мин при плотности тока 10 а/дм и температуре 20°С. Образующеес при этом количество ионов щестивалентного хрома определ ют иодометрпческим методом в 15 мл отобранного из чейки раствора. По предварительно построенному калибровочному графику наход т количество свинца в анализируемом растворе. Калибровочный график в координатах выход щестивалентного хрома по току (%)-концентраци свинца (мкг/мл) стро т, пользу сь растворами свинца с известной концентрацией.A portion of the test solution containing lead up to 2 µg / ml is injected into the prepared electrolyte, which is determined by the solubility of lead sulfate. Then electrolysis is carried out for 1 hour in a cell with a diaphragm and anode space capacity of 100-300 ml on a platinum disk anode, rotating at a constant speed of 400 rpm at a current density of 10 a / dm and a temperature of 20 ° C. The amount of ions of generic chromium formed in this case is determined by the iodometry method in 15 ml of the solution selected from the cell. The amount of lead in the solution to be analyzed is determined from the previously constructed calibration graph. A calibration graph in the coordinates of generic chromium yield over current (%) —the lead concentration (µg / ml) is plotted using lead solutions with a known concentration.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1737226A SU421926A1 (en) | 1972-01-11 | 1972-01-11 | KINETIC WAY TO DETERMINE LEAD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1737226A SU421926A1 (en) | 1972-01-11 | 1972-01-11 | KINETIC WAY TO DETERMINE LEAD |
Publications (1)
Publication Number | Publication Date |
---|---|
SU421926A1 true SU421926A1 (en) | 1974-03-30 |
Family
ID=20499948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1737226A SU421926A1 (en) | 1972-01-11 | 1972-01-11 | KINETIC WAY TO DETERMINE LEAD |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU421926A1 (en) |
-
1972
- 1972-01-11 SU SU1737226A patent/SU421926A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3431182A (en) | Fluoride sensitive electrode and method of using same | |
SU421926A1 (en) | KINETIC WAY TO DETERMINE LEAD | |
Hadjiioannou et al. | Evaluation of a perchlorate-selective electrode for catalytic titrations involving periodate indicator reactions | |
SU469920A1 (en) | Polygraphic method for the determination of gold in industrial cyanide electrolytes of gilding | |
Hrabánková et al. | Cathodic stripping voltammetry of lead | |
RU2241983C1 (en) | Method of determining rhenium and rhenium in presence of molybdenum by inversion voltammetry technique | |
Chreitzbeeg et al. | The overpotential of the manganese dioxide electrode | |
RU2247369C1 (en) | Method for determining rhenium in ores and ore concentrates by inverse volt-ampere measurements method | |
SU1006368A1 (en) | Method for detecting chlorine in cement materials | |
SU1408343A1 (en) | Method of identifying gold (iii) in electrolyte solutions | |
SU893871A1 (en) | Method of coulombometric determination of gold | |
SU643792A1 (en) | Inversion-voltamperometric method of determining arsenate-ions in aqueous solutions | |
SU1263723A1 (en) | Method of producing solution of sodium rhenide | |
US3349011A (en) | Method and apparatus for monitoring co2 | |
SU518708A1 (en) | Method for measuring carbon dioxide | |
RU2330274C1 (en) | Voltammetric method of silver detection in aqueous media | |
CN115639312A (en) | Method for determining content of chlorine in uranium tetrachloride | |
SU1303924A1 (en) | Method of voltammetric determining of zinc in cyanic solutions | |
SU783675A1 (en) | Method of polarographic determination of acid and its salts | |
SU1366931A1 (en) | Device for amperometric titration | |
SU136589A1 (en) | Electrochemical method for quantitative determination of metal cations | |
SU379871A1 (en) | METHOD OF QUANTITATIVE DETERMINATION OF AROMATIC ALDEHYDES | |
SU771535A1 (en) | Method of potentiometric determining of bismuth | |
SU140604A1 (en) | Method for quantitative determination of zirconium | |
RU2222006C2 (en) | Method of inversion volt-amperometric determination of asymmetrical dimethylhydrazine |