SU789745A1 - Apparatus for entering sample into chromatograph - Google Patents
Apparatus for entering sample into chromatograph Download PDFInfo
- Publication number
- SU789745A1 SU789745A1 SU792724042A SU2724042A SU789745A1 SU 789745 A1 SU789745 A1 SU 789745A1 SU 792724042 A SU792724042 A SU 792724042A SU 2724042 A SU2724042 A SU 2724042A SU 789745 A1 SU789745 A1 SU 789745A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- chromatograph
- sample
- entering sample
- seal
- syringe
- Prior art date
Links
Description
1one
Изобретейие относитс к химической аппаратуре,св занной с вводом или отбором газовых и жидких ;.проб, в частности ко вводу этих проб в ис паритель хроматографа. ,5The invention relates to chemical equipment associated with the introduction or removal of gas and liquid; samples, in particular, the introduction of these samples into the chromatograph evaporator. ,five
Известны устройства дл ввода пробы в хроматограф в виде шприцов, в которых жидкую или газовую пробу дозируют и ввод т в предварительно нагретый испаритель хроматографа Ю через эластичное термостойкое уплотнение . В дальнейшем проба, испарившись , захватываетс потоком газо носител и переноситс к аналитичес- , кую колонку дл разделени и последуто-15 щего детектировани f .Devices for introducing a sample into a chromatograph in the form of syringes are known, in which a liquid or gas sample is metered and introduced into a preheated chromatograph evaporator U through an elastic heat-resistant seal. Subsequently, the sample, having evaporated, is captured by a stream of carrier gas and transferred to an analytical column for separation and subsequent detection of f.
Существенным недостатком данных устройств вл етс негерметичность эластичного термостойкого уплотнени испарител хроматографа после ввода 20 пробы шприцом, поскольку в этом уплотнении остаетс отверстие от иглы шприца.A significant drawback of these devices is the leakage of the elastic heat-resistant seal of the chromatograph evaporator after the injection of 20 samples with a syringe, since there is a hole in the seal from the needle of the syringe in this seal.
Продолжительна работа с хроматографами различных моделей показывает 25 что при вводе газовой или жидкой . пробы шприцом с иглой/ имеющей внутренний диаметр около 1 мм, эластичное термостойкое уплотнение (прокладка ) быстро выхолит из стро и 30Long work with chromatographs of various models shows 25 that when entering gas or liquid. Samples with a syringe with a needle / having an internal diameter of about 1 mm, an elastic heat-resistant seal (gasket) is quickly worn out and 30
требуетс часта замена этой прокладкр . Если же ввод пробы проводить шприцом с иглой меньшего диаметра, то при этом затрудн етс перекачка б.9льши х объемов проб через тонкуй иглу, что приводит к раст нутому по времени вводу пробы и как следствие к дополнительным погрешност м анализа.frequent replacement of this gasket is required. If the sample is introduced with a syringe with a needle of a smaller diameter, then it is difficult to transfer more than 9 sample volumes through a thin needle, which leads to a prolonged sample introduction and, as a consequence, to additional analysis errors.
Во всех указанных случа х необходим посто нный контроль за герметичностью эластичного термостойкого уплотнени испарител хроматографа , поскольку утечка части пробы через это уплотнение как и утечка газа-носител приводит к грубым ошибкам , определени анализируемых соединений .In all these cases, constant monitoring of the tightness of the elastic heat-resistant seal of the chromatograph evaporator is necessary, since leakage of a part of the sample through this seal, like leakage of the carrier gas, leads to gross errors, the definition of the analyzed compounds.
Наиболее близким по технической сущности к предлагаемому вл етс устройство дл ввода пробы в хроматограф , включающее испаритель в виде трубки с нагревателем, уплотнительный элемент из эластичного материала и резьбовую зажимающую пробку. Уплотнительный элемент выполнен в :виде ленты, перемещаемой после эксплуатации 2 .The closest in technical essence to the present invention is a device for introducing a sample into a chromatograph, including an evaporator in the form of a tube with a heater, a sealing element made of an elastic material and a threaded clamping plug. The sealing element is made in: the form of a tape that is moved after operation 2.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792724042A SU789745A1 (en) | 1979-02-12 | 1979-02-12 | Apparatus for entering sample into chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792724042A SU789745A1 (en) | 1979-02-12 | 1979-02-12 | Apparatus for entering sample into chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU789745A1 true SU789745A1 (en) | 1980-12-23 |
Family
ID=20809948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792724042A SU789745A1 (en) | 1979-02-12 | 1979-02-12 | Apparatus for entering sample into chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU789745A1 (en) |
-
1979
- 1979-02-12 SU SU792724042A patent/SU789745A1/en active
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