SU934298A1 - Method of producing graduation vapour-gas mixtures - Google Patents
Method of producing graduation vapour-gas mixtures Download PDFInfo
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- SU934298A1 SU934298A1 SU803008968A SU3008968A SU934298A1 SU 934298 A1 SU934298 A1 SU 934298A1 SU 803008968 A SU803008968 A SU 803008968A SU 3008968 A SU3008968 A SU 3008968A SU 934298 A1 SU934298 A1 SU 934298A1
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- producing
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- gas
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(54) СПОСОБ ПОЛУЧЕНИЯ ГРАДУИРОВОЧНЫХ ПАРОГАЗОВЫХ СМЕСЕЙ(54) METHOD FOR OBTAINING GRADUATING STEAM-GAS MIXTURES
1one
Изобретение относитс к физико-химическим методам контрол состава вещества, а именно к способам приготовлени парогазовых смесей с известным содержанием анализируемого компонента дл градуировки газоаналитических приборов, в частности газовых хроматографов, в диапазоне микроконцентраций легколетучих веществ.The invention relates to physicochemical methods for controlling the composition of a substance, and specifically to methods for preparing vapor-gas mixtures with a known content of the analyte for calibration of gas-analytical devices, in particular gas chromatographs, in the microconcentration range of volatile substances.
Известен способ получени микропотоков легколетучих веществ, например фтористого водорода, диффузией паров вещества внутрь фторопластовой трубки, продуваемой газомразбавителем , путем заполнени и термостатировани сосуда, в который помещена трубка 1.A method is known for producing microflows of highly volatile substances, for example hydrogen fluoride, by diffusing substance vapors inside a fluoroplastic tube blown by a gas spreader by filling and thermostating the vessel in which tube 1 is placed.
Недостатком известного способа вл етс СЛОЖНОСТЬ и длительность аттестации величины микропотока, котора осуществл етс путем химического анализа смеси паров вещества с газом-разбавителем.The disadvantage of the known method is the COMPLEXITY and the duration of the attestation of the microflow value, which is carried out by chemical analysis of the mixture of vapor of a substance with a diluent gas.
Наиболее близким по технической сущности и достигаемому результату к предлагаемому вл етс способ получени градуировочных парогазовых смесей с применением сосуда с газопроницаемыми стенками, при котором сосуд заполн ют легколетучим вещеетвом , герметизируют, устанавливают в термостатируемом канале, продуваемом газовым ПОТОКОМ, в который пары легколетучего вещества диффундируют через стенки сосуда, и контролируют количество перещедщего в газовыйПОТОК легколетучего вещества путем периодического, взвешивани сосуда 2.The closest in technical essence and the achieved result to the proposed is a method of obtaining calibration vapor-gas mixtures using a vessel with gas-permeable walls, in which the vessel is filled with a volatile substance, sealed, installed in a thermostatically controlled channel blown by a gas FLOW, in which the vapor of volatile substance is dispensed, it is dried the walls of the vessel, and control the amount of volatile substance transferred into the gas flow by periodically weighing the vessel 2.
Недостатки известного способа; ограниченность диапазона величин микропотоковThe disadvantages of this method; limited range of microflow values
10 в сторону малых значений в св зи с высокой скоростью диффузии даже при нормальной температуре; высокое парциальное давление, развиваемое веществом внутри сосуда, что приводит часто к потере герметичности последнего . Операции заполнени сложны, тре15 буют охлаждени до низких температур с целью заполнени сосуда веществом в сжиженном СОСТОЯНИИ. Сложна герметизаци сосуда механическими способами. Кроме того, герметизаци сваркой не может быть использована ввиду опасности полного улетучивани вещества из-за разрыва сосуда в месте сварки.10 towards low values because of the high diffusion rate, even at normal temperature; high partial pressure developed by the substance inside the vessel, which often leads to loss of tightness of the latter. The filling operations are complex, they require cooling to low temperatures in order to fill the vessel with a substance in a liquefied CONDITION. Complicated sealing of the vessel by mechanical means. In addition, sealing by welding cannot be used due to the danger of complete volatilization of the substance due to the rupture of the vessel at the welding site.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU803008968A SU934298A1 (en) | 1980-11-25 | 1980-11-25 | Method of producing graduation vapour-gas mixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU803008968A SU934298A1 (en) | 1980-11-25 | 1980-11-25 | Method of producing graduation vapour-gas mixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU934298A1 true SU934298A1 (en) | 1982-06-07 |
Family
ID=20927837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU803008968A SU934298A1 (en) | 1980-11-25 | 1980-11-25 | Method of producing graduation vapour-gas mixtures |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU934298A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2501011C2 (en) * | 2012-01-10 | 2013-12-10 | Общество с ограниченной ответственностью "Центр дисбиозов" | Calibration method of gas chromatography-mass spectrometry (gc-ms) system equipped with special software for determination of markers of microorganisms in tested sample of material of biological origin |
| RU2674304C1 (en) * | 2017-11-23 | 2018-12-06 | Акционерное общество "Уральский электрохимический комбинат" | Method for preparation of gas mixtures certified for fluorine hydrogen content |
-
1980
- 1980-11-25 SU SU803008968A patent/SU934298A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2501011C2 (en) * | 2012-01-10 | 2013-12-10 | Общество с ограниченной ответственностью "Центр дисбиозов" | Calibration method of gas chromatography-mass spectrometry (gc-ms) system equipped with special software for determination of markers of microorganisms in tested sample of material of biological origin |
| RU2674304C1 (en) * | 2017-11-23 | 2018-12-06 | Акционерное общество "Уральский электрохимический комбинат" | Method for preparation of gas mixtures certified for fluorine hydrogen content |
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