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PHOTO-IONIZATION DETECTOR [1 record]
Record 1 - internal organization data 1998-05-20
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- photoionization detector
1, record 1, English, photoionization%20detector
correct
Record 1, Abbreviations, English
- PID 2, record 1, English, PID
correct
Record 1, Synonyms, English
- photo-ionization detector 3, record 1, English, photo%2Dionization%20detector
correct
- PID 4, record 1, English, PID
correct
- PID 4, record 1, English, PID
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Photoionization detector ... consists of a chamber into which gases suitable for the discharge such as helium, argon, nitrogen, or hydrogen are introduced through [a] tube which serves as the cathode for the discharge. The ultraviolet radiation or glow discharge in the hollow cathode, maintained by a small current between the cathode and discharge anode, is sufficiently energetic to ionize components in the carrier gas effluent entering through the tube, the collecting electrode (anode) for the ions liberated within the chamber enclosed by the second cathode. 5, record 1, English, - photoionization%20detector
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- détecteur à photoionisation
1, record 1, French, d%C3%A9tecteur%20%C3%A0%20photoionisation
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- détecteur à photo-ionisation 2, record 1, French, d%C3%A9tecteur%20%C3%A0%20photo%2Dionisation
correct, masculine noun
- DPI 3, record 1, French, DPI
masculine noun
- DPI 3, record 1, French, DPI
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Une version commerciale de ce détecteur est apparue récemment sur le marché, il est composé d'une lampe UV [détecteur à photoionisation] scellée qui émet un rayonnement à 121,6nm (10,2 eV) à travers une fenêtre en fluorure de magnésium. Si le soluté passant dans ce détecteur a un potentiel d'ionisation inférieur à 10,2eV, il s'ionise en absorbant un photon. Les ions issus de cette photoionisation sont collectés en appliquant un potentiel positif sur une des électrodes. Le courant qui en résulte est amplifié par un électromètre identique à celui utilisé avec un détecteur à ionisation de flamme. 1, record 1, French, - d%C3%A9tecteur%20%C3%A0%20photoionisation
Record 1, Spanish
Record 1, Textual support, Spanish
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