SU378761A1 - - Google Patents
Info
- Publication number
- SU378761A1 SU378761A1 SU754891A SU754891A SU378761A1 SU 378761 A1 SU378761 A1 SU 378761A1 SU 754891 A SU754891 A SU 754891A SU 754891 A SU754891 A SU 754891A SU 378761 A1 SU378761 A1 SU 378761A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mercury
- calomel
- electrode
- rod
- preparing
- Prior art date
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
(54) СПОСОБ ПРИГОТОВЛЕНИЯ КАЛОМЕЛЬНОГО(54) METHOD FOR PREPARATION OF NICKEL
ЭЛЕКТРОДАElectrode
1one
Известен способ приготовлени каломельного электрода дл потенциометрического титровани и определени рН растворов. Приготовленный по этому способу электрод представл ет собой стекл нный сосуд, содержа- 5 щий небольшое количество ртути. Над ртутью помещаетс слой ртутно-каломелевой пасты, покрытой насыщенным раствором хлористого кали . В слой ртути ощщена в качестве стержн стекл нна трубка с впа нной на fO конце платиновой проволочкой. Такой- способ приготовлени каломельного электрода сложен и требует применени дорогосто щей платины.A known method of preparing a calomel electrode for potentiometric titration and determination of the pH of solutions. The electrode prepared by this method is a glass vessel containing a small amount of mercury. A layer of mercury-calomel paste coated with a saturated solution of potassium chloride is placed over the mercury. In a layer of mercury, a glass tube with a platinum wire hollowed in at the fO end is pinched as a rod. This method of preparing the calomel electrode is complex and requires the use of expensive platinum.
С целью удещевлени каломельного элек- 15 трода предлагаетс вместо платины примен ть графитовый стержень, предварительно прокаленный и промытый гор чей дистиллированной водой. На этот стержень нанос т слои ртути и каломели.20In order to increase the calomel electrode, a graphite rod, previously calcined and washed with hot distilled water, is used instead of platinum. Layers of mercury and calomel are deposited on this rod.
На чертеже изображен предлагаемый электрод.The drawing shows the proposed electrode.
Предварительно прокаленный в пламени спиртовки и промытый гор чей дистиллированной водой стержень впа н в стекл5шную The rod preliminarily calcined in the flame of a spirit-lamp and washed with hot distilled water is pushed into the glass
трубочку 1, в которую дл контакта с внешней цепью вливают небольшой слой 2 ртути. Затем графитовый электрод помещают в раствор электролита состава Ма2 ИдС8д1и в течение 15-20 мин провод т электролиз при силе тока 2 О ма и напр же нии 1,5 в. На катоде пр оисходитпоследовательное восстановление двухвалентной ртути до одновалентной и металлической. Результатом такого процесса вл етс образование на графитовом стержне 3 поверхностного сло 4, состо щего из каломели/Hg С6) и ртути. После этого электрод промывают дистиллированной водой и помещают в насыщенный раствор хлористого кали . Электролиз можно вести и от простой батареи, что позвол ет изготовл ть такой электрод в услови х передвижных лабораторий.tube 1, into which a small layer 2 of mercury is poured into contact with the external circuit. Then, a graphite electrode is placed in an electrolyte solution of composition Ma2 IdS8d1i and electrolysis is carried out for 15–20 min with a current of 2 Oma and a voltage of 1.5 volts. At the cathode, bivalent mercury is gradually reduced to monovalent and metallic. The result of this process is the formation on the graphite rod 3 of the surface layer 4 consisting of calomel (Hg C6) and mercury. After that, the electrode is washed with distilled water and placed in a saturated solution of potassium chloride. Electrolysis can also be conducted from a simple battery, which makes it possible to manufacture such an electrode under conditions of mobile laboratories.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU754891A SU378761A1 (en) | 1961-12-06 | 1961-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU754891A SU378761A1 (en) | 1961-12-06 | 1961-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU378761A1 true SU378761A1 (en) | 1973-04-18 |
Family
ID=20437295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU754891A SU378761A1 (en) | 1961-12-06 | 1961-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU378761A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7901931B2 (en) * | 2003-09-11 | 2011-03-08 | Universite De Bourgogne | Cell for measuring biological activities and/or physiological parameters of micro-organisms |
-
1961
- 1961-12-06 SU SU754891A patent/SU378761A1/ru active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7901931B2 (en) * | 2003-09-11 | 2011-03-08 | Universite De Bourgogne | Cell for measuring biological activities and/or physiological parameters of micro-organisms |
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