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INJECTION PORT [1 record]
Record 1 - internal organization data 1999-04-23
Record 1, English
Record 1, Subject field(s)
- Analytical Chemistry
Record 1, Main entry term, English
- injection port
1, record 1, English, injection%20port
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- injection block 2, record 1, English, injection%20block
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A device by means of which a liquid or gaseous sample is introduced directly into the chromatographic column or is swept into the column by the mobile phase. 3, record 1, English, - injection%20port
Record number: 1, Textual support number: 1 CONT
An injection port is necessary in all g.c. [gas chromatography] and h.p.l.c. [high-performance liquid chromatography] systems in which syringe injection is employed. The injection port joins the top of the column to the mobile phase supply line, and has a third outlet through a small orifice covered by a self-sealing septum. Injection of samples is done by inserting the hypodermic syringe containing the sample through this septum so that the point of the needle is immediately above the head of the column. Design of the injection port must be such that it can be maintained at a uniform temperature and will possess a very small dead volume. 4, record 1, English, - injection%20port
Record 1, Key term(s)
- sample injector
- sample port
Record 1, French
Record 1, Domaine(s)
- Chimie analytique
Record 1, Main entry term, French
- chambre d'injection
1, record 1, French, chambre%20d%27injection
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- injecteur d'échantillon 2, record 1, French, injecteur%20d%27%C3%A9chantillon
masculine noun
- chambre d'introduction 3, record 1, French, chambre%20d%27introduction
feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Chambre d'injection pour liquides ou solutions. C'est le système le plus utilisé [...] le gaz porteur, de préférence préchauffé, entre dans une chambre chauffée, obturée par une pastille d'élastomère, le septum, qui assure l'étanchéité. À l'aide d'une seringue hypodermique de petite capacité, on pique au travers de la membrane, de telle manière que l'extrémité de l'aiguille arrive au-dessous du niveau de l'arrivée du gaz porteur, puis on pousse le piston pour réaliser l'injection. La condition demandée à la chambre d'injection est d'avoir un volume interne aussi petit que possible, pour limiter les volumes morts de l'appareil. Pour assurer la vaporisation instantanée de l'échantillon, l'injecteur est habituellement maintenu à une température au moins 30 °C plus élevée que celle du four contenant la colonne. 4, record 1, French, - chambre%20d%27injection
Record number: 1, Textual support number: 1 OBS
L'injecteur à liquides classiques comprend: un écrou à ailettes pour serrage et refroidissement du septum, le septum, le bloc chauffé, la chambre de vaporisation, le capillaire de préchauffage, le raccord de colonne. 2, record 1, French, - chambre%20d%27injection
Record 1, Spanish
Record 1, Textual support, Spanish
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