Résumé Preview
ISO 20411:2018 specifies a method for determining the maximum count rate for an acceptable limit of divergence from linearity of the intensity scale in pulse counting magnetic sector-type secondary ion mass spectrometers or quadrupole secondary ion mass spectrometers. It uses a test based on depth profile analysis of two isotopes in a reference material which has a gradual concentration change between low and high concentration regimes. It also includes a correction method for saturated intensity caused by the dead time of the detector. The correction can increase the intensity range for 95 % linearity so that a higher maximum count rate can be employed for those spectrometers for which the relevant correction equations have been shown to be valid.
ISO 20411:2018 does not apply to time of flight mass spectrometers.
ISO 20411:2018 is only applicable to elements with minor isotopes. It is not applicable if the element is monoisotopic or contains isotopes with equal abundances.
Informations générales
-
État actuel : PubliéeDate de publication : 2018-03
-
Edition : 1
-
- ICS :
-
Méthodes d'analyse chimique
Acheter cette norme
| Format | Langue | |
|---|---|---|
| PDF + ePub | ||
| Papier |
- CHF88
Vous avez une question?
Consulter notre FAQ
Horaires d’ouverture:
De lundi à vendredi - 09:00-12:00, 14:00-17:00 (UTC+1)
Suivez l'actualité de l'ISO
Inscrivez-vous à notre Newsletter (en anglais) pour suivre nos actualités, points de vue et informations sur nos produits.